英语学习词典
  

signal

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signal [ 'signəl] n.信号 vi.发信号

signal ['signl] n. 信号,暗号

signal ['signəl] 信号

DSP Digital Signal Processing 数字信号处理

IVDS Insertion Test Signal 插入测试信号

Optimal Stereo Signal 最佳立体声信号

SNR Signal to Noise Ratio 信噪比

TPS Tracking Pilot Signal 跟踪导频信号

VITS Vertical Interval Test Signal 场消隐期测试信号

Y-signal Luminance Signal 亮度信号

DSP Digital Signal Processor 数字信令处理器

SS7 Signaling System Number 7 7号信令

SVC Switched Virtual Circuit or Signaling Virtual Circuit交换式虚电路或发信号虚电路

Signal Lamp 边侧栏

交通规则 traffic regulation
路标 guide post
里程碑 milestone
停车标志 mark car stop
红绿灯 traffic light
自动红绿灯 automatic traffic signal light
红灯 red light
绿灯 green light
黄灯 amber light
交通岗 traffic post
岗亭 police box
交通警 traffic police
打手势 pantomime
单行线 single line
双白线 double white lines
双程线dual carriage-way
斑马线 zebra stripes
划路线机 traffic line marker
交通干线 artery traffic
车行道 carriage-way
辅助车道 lane auxiliary
双车道 two-way traffic
自行车通行 cyclists only
单行道 one way only
窄路 narrow road
潮湿路滑 slippery when wet
陡坡 steep hill
不平整路 rough road
弯路 curve road ; bend road
连续弯路 winding road
之字路 double bend road
之字公路 switch back road
下坡危险 dangerous down grade
道路交叉点 road junction
十字路 cross road
左转 turn left
右转 turn right
靠左 keep left
靠右 keep right
慢驶 slow
速度 speed
超速 excessive speed
速度限制 speed limit
恢复速度 resume speed
禁止通行 no through traffic
此路不通 blocked
不准驶入 no entry
不准超越 keep in line ; no overhead
不准掉头 no turns
让车道 passing bay
回路 loop
安全岛 safety island
停车处 parking place
停私人车 private car park
只停公用车 public car only
不准停车 restricted stop
不准滞留 restricted waiting
临街停车 parking on-street
街外停车 parking off-street
街外卸车 loading off-street
当心行人 caution pedestrian crossing
当心牲畜 caution animals
前面狭桥 narrow bridge ahead
拱桥 hump bridge
火车栅 level crossing
修路 road works
医院 hospital
儿童 children
学校 school
寂静地带 silent zone
非寂静地带 silent zone ends
交通管理 traffic control
人山人海 crowded conditions
拥挤的人 jam-packed with people
交通拥挤 traffic jam
水泄不通 overwhelm
顺挤 extrusion direct
冲挤 extrusion impact
推挤 shoved
挨身轻推 nudging
让路 give way
粗心行人 careless pedestrian
犯交通罪 committing traffic offences
执照被记违章 endorsed on driving license
危险驾驶 dangerous driving
粗心驾车 careless driving
无教员而驾驶 driving without an instructor
无证驾驶 driving without license
未经车主同意 without the owner's consent
无第三方保险 without third-party insurance
未挂学字牌 driving without a "L" plate
安全第一 safety first
轻微碰撞 slight impact
迎面相撞 head-on collision
相撞 collided
连环撞 a chain collision
撞车 crash
辗过 run over
肇事逃跑司机 hit-run driver
冲上人行道 drive onto the pavement

signal vehicle/carrier 信号载体

bus priority signal 公共汽车优先通行信号

信号与信息处理 Signal and Information Processing

FISU Fill-In Signal Unit 填充信令单元

LSSU Link Status Signal Unit 链路状态信令单元

MSU Message Signal Unit 消息信令单元

信号与线性系统 Signal & Linear System

数字信号处理 Digital Signal Processing

信号源
signal source

无用信号
undesired signal

干扰信号
interfering signal

信号发生器
signal generator

信号阀
signal valve

As we drove into the mountains, the radio signal faded.
当我们驶进山区时,无线电信号渐渐减弱了。

Japanese leaders saw the visit as an important signal of support.
日本领导人把那次访问看作是对方给予支持的重要信号。

Stop when the signal light is red.
信号灯是红色时就停下来。

She made a signal with her arm for a left turn.
她用手臂示意向左拐弯。

The two sportsmen stood apart, waiting for the signal to fight.
两个运动员分开站着,等待信号开始比赛。

Send out a distress signal; the ship is sinking.
发求救信号; 船在下沉。

I corrected my watch by the time signal.
我按报时信号校正我的表。

Signals control each section of the railway track.
各种信号控制着铁路轨道的每个部分。

My turn signal isn't working.
我的方向灯坏了。

Location,continuous AE signal 定位,连续AE信号

Signal 信号

Signal gradient 信号梯度

Signal over load point 信号过载点

Signal overload level 信号过载电平

Signal to noise ratio 信噪比

暗号 [àn hào] /secret signal (sign)/countersign/cipher/

电话信号 [diàn huà xìn hào] /telephone signal/

电信号 [diàn xìn hào] /electrical signal/

光信号 [guāng xìn hào] /optical signal/

红绿灯 [hóng lǜ dēng] /(red and green) traffic light/traffic signal/

麾 [huī] /signal flag/to signal/

警报 [jǐng bào] /(fire) alarm/alert signal/alarm/alert/warning/

手势 [shǒu shì] /gesture/sign/signal/

数位信号 [shù wèi xìn hào] /digital signal/

数字信号 [shù zì xìn hào] /digital signal/

信道 [xìn dào] /signal path/

信号 [xìn hào] /signal/

眼色 [yǎn sè] /(n) hint or signal given with one's eyes/

语音信号 [yǔ yīn xìn hào] /voice signal/

As is true of any developed society, in America a complex set of cultural signals, assumptions, and conventions underlies all social interrelationships.
同任何发达国家一样,一系列复杂的文化特征,信念和习俗构成了美国所有社会交往的基础。

{adj: asynchronous} (digital communication) pertaining to a transmission technique that does not require a common clock between the communicating devices; timing signals are derived from special characters in the data stream itself
<-> synchronous

{adj: attenuated} of an electrical signal; reduced in amplitude with little or no distortion

{adj: broadband} of or relating to or being a communications network in which the bandwidth can be divided and shared by multiple simultaneous signals (as for voice or data or video)

{adj: busy, engaged, in use} (of facilities such as telephones or lavatories) unavailable for use by anyone else or indicating unavailability; (`engaged' is a British term for a busy telephone line)
"her line is busy"
"receptionists' telephones are always engaged"
"the lavatory is in use"
"kept getting a busy signal"

{adj: confusable, mistakable} so similar as to be easily identified for another thing
"potentially confusable senses of words"
"easily mistakable signals"

{adj: confusing, perplexing, puzzling} lacking clarity of meaning; causing confusion or perplexity
"sent confusing signals to Iraq"
"perplexing to someone who knew nothing about it"
"a puzzling statement"

{adj: effaceable, erasable} capable of being effaced
"the fire's worst scars were effaceable by a comprehensive program of reforestation"
"a signal too loud to be erasable in a single pass through the erase head"

{adj: prearranged} planned beforehand
"a prearranged signal"

{adj: secret} communicated covertly
"their secret signal was a wink"
"secret messages"

{adj: signal} notably out of the ordinary
"the year saw one signal triumph for the Labour party"

{adj: strong} having strength or power greater than average or expected
"a strong radio signal"
"strong medicine"
"a strong man"
<-> weak

{adj: synchronous} (digital communication) pertaining to a transmission technique that requires a common clock signal (a timing reference) between the communicating devices in order to coordinate their transmissions
<-> asynchronous

{adj: telepathic} communicating without apparent physical signals

{adj: transmitted} sent electronically as by wire or radio
"the transmitted signals"

{adv: intuitively} in an intuitive manner
"inventors seem to have chosen intuitively a combination of explosive and aggressive sounds as warning signals to be used on automobiles"

{adv: signally, unmistakably, remarkably} in a signal manner
"signally inappropriate methods"

{adv: signally} as a signal
"a term that is used signally rather than symbolically"

{n: Bengal light} a steady bright blue light; formerly used as a signal but now a firework

{n: Global Positioning System, GPS} a navigational system involving satellites and computers that can determine the latitude and longitude of a receiver on Earth by computing the time difference for signals from different satellites to reach the receiver

{n: Marconi, Guglielmo Marconi} Italian electrical engineer who invented wireless telegraphy and in 1901 transmitted radio signals across the Atlantic Ocean (1874-1937)

{n: Mayday} an internationally recognized distress signal via radiotelephone (from the French m'aider)

{n: Morse, Morse code, international Morse code} a telegraph code in which letters and numbers are represented by strings of dots and dashes (short and long signals)

{n: Nyquist frequency} (telecommunication) twice the maximum frequency occurring in the transmitted signal

{n: Nyquist rate} (telecommunicaton) the lowest sampling rate that will permit accurate reconstruction of a sampled analog signal

{n: SOS} an internationally recognized distress signal in radio code

{n: acoustic modem} a modem that converts electrical signals to telephone tones and back again

{n: air alert} the warning signal that begins an period of preparation for an enemy air attack

{n: alarm, alert, warning signal, alarum} an automatic signal (usually a sound) warning of danger

{n: alarm, warning device, alarm system} a device that signals the occurrence of some undesirable event

{n: all clear} a signal (usually a siren) that danger is over

{n: alpha fetoprotein, alpha foetoprotein, AFP} an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)

{n: amplification, gain} the amount of increase in signal power or voltage or current expressed as the ratio of output to input

{n: amplifier} electronic equipment that increases strength of signals passing through it

{n: antenna, aerial, transmitting aerial} an electrical device that sends or receives radio or television signals

{n: attenuator} an electrical device for attenuating the strength of an electrical signal

{n: audio, sound} the audible part of a transmitted signal
"they always raise the audio for commercials"

{n: background noise, ground noise} extraneous noise contaminating sound measurements that cannot be separated from the desired signal

{n: background, background signal} extraneous signals that can be confused with the phenomenon to be observed or measured
"they got a bad connection and could hardly hear one another over the background signals"

{n: beat} a stroke or blow
"the signal was two beats on the steam pipe"

{n: beep, bleep} a short high tone produced as a signal or warning

{n: bell, ship's bell} (nautical) each of the eight half-hour units of nautical time signaled by strokes of a ship's bell; eight bells signals 4:00, 8:00, or 12:00 o'clock, either a.m. or p.m.

{n: birth} the time when something begins (especially life)
"they divorced after the birth of the child"
"his election signaled the birth of a new age"
<-> death

{n: blinker, flasher} a light that flashes on and off; used as a signal or to send messages

{n: blinker, turn signal, turn indicator, trafficator} a blinking light on a motor vehicle that indicates the direction in which the vehicle is about to turn

{n: bonfire, balefire} a large outdoor fire that is lighted as a signal or in celebration

{n: booster, booster amplifier, booster station, relay link, relay station, relay transmitter} an amplifier for restoring the strength of a transmitted signal

{n: bugle call} a signal broadcast by the sound of a bugle

{n: burglar alarm} a loud warning signal produced by a burglar alarm
"they could hear the burglar alarm a mile away"

{n: buzzer} a signaling device that makes a buzzing sound

{n: cable, line, transmission line} a conductor for transmitting electrical or optical signals or electric power

{n: carrier wave, carrier} a radio wave that can be modulated in order to transmit a signal

{n: channel, transmission channel} a path over which electrical signals can pass
"a channel is typically what you rent from a telephone company"

{n: closed circuit, loop} a complete electrical circuit around which current flows or a signal circulates
<-> open circuit

{n: clutter} unwanted echoes that interfere with the observation of signals on a radar screen

{n: coaxial cable, coax, coax cable} a transmission line for high-frequency signals

{n: code flag, nautical signal flag} one of an international code of flag signals used between ships

{n: coding system} a system of signals used to represent letters or numbers in transmitting messages

{n: communications satellite} an artificial satellite that relays signals back to earth; moves in a geostationary orbit

{n: computer monitor} a device that displays signals on a computer screen

{n: crosstalk, XT} the presence of an unwanted signal via an accidental coupling

{n: curfew} a signal (usually a bell) announcing the start of curfew restrictions

{n: curfew} the time that the curfew signal is sounded

{n: dash, dah} the longer of the two telegraphic signals used in Morse code

{n: delay line} a circuit designed to introduce a calculated delay into the transmission of a signal

{n: demodulation} (electronics) the reception of a signal by extracting it from the carrier wave

{n: depth} (usually plural) the deepest and most remote part
"from the depths of darkest Africa"
"signals received from the depths of space"

{n: detector, sensor, sensing element} any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner

{n: detector} electronic equipment that detects the presence of radio signals or radioactivity

{n: diaphone} a foghorn that makes a signal consisting of two tones

{n: digital-analog converter, digital-to-analog converter} device for converting digital signals into analogue signals

{n: digitizer, digitiser, analog-digital converter, analog-to-digital converter} device for converting analogue signals into digital signals

{n: directional antenna} an antenna that transmits or receives signals only in a narrow angle

{n: directivity, directionality} the property of a microphone or antenna of being more sensitive in one direction than in another
"the antenna received signals with no directivity"

{n: distortion} a change (usually undesired) in the waveform of an acoustic or analog electrical signal; the difference between two measurements of a signal (as between the input and output signal)
"heavy metal guitar players use vacuum tube amplifiers to produce extreme distortion"

{n: distress signal, distress call} an internationally recognized signal sent out by a ship or plane indicating that help is needed

{n: doorbell, bell, buzzer} a push button at an outer door that gives a ringing or buzzing signal when pushed

{n: dot, dit} the shorter of the two telegraphic signals used in Morse code

{n: doubler} an electronic device that doubles the voltage or the frequency of an input signal

{n: dressage} maneuvers of a horse in response to body signals by the rider

{n: drumbeat} (military) the beating of a drum as a signal for lowering the flag at sundown

{n: earphone, earpiece, headphone, phone} electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear
"it was not the typing but the earphones that she disliked"

{n: electrical disturbance} electrical signals produced by unwanted sources (atmospherics or receiver noise or unwanted transmitters)

{n: electronic converter} (telecommunication) converter for converting a signal from one frequency to another

{n: electronic signal} a signal generated by electronic means

{n: ethernet} a type of networking technology for local area networks; coaxial cable carries radio frequency signals between computers at a rate of 10 megabits per second

{n: etiolation} a pale and sickly appearance
"his etiolation signaled years in prison"

{n: fadeout} a gradual temporary loss of a transmitted signal due to electrical disturbances

{n: fiber optics, fiberoptics, fibre optics, fibreoptics} the transmission of light signals via glass fibers

{n: fidelity} accuracy with which an electronic system reproduces the sound or image of its input signal

{n: filter} an electrical device that alters the frequency spectrum of signals passing through it

{n: firework, pyrotechnic} (usually plural) a device with an explosive that burns at a low rate and with colored flames; can be used to illuminate areas or send signals etc.

{n: flag, signal flag} a rectangular piece of fabric used as a signalling device

{n: foghorn, fogsignal} a loud low warning signal that can be heard by fogbound ships

{n: frequency band, waveband} a band of adjacent radio frequencies (e.g., assigned for transmitting radio or television signals)

{n: frequency-response curve, frequency-response characteristic} (electronics) a graph of frequency response with signal amplitude or gain plotted against frequency

{n: fusee, fuzee} a colored flare used as a warning signal by trucks and trains

{n: gantry, gauntry} a framework of steel bars raised on side supports to bridge over or around something; can display railway signals above several tracks or can support a traveling crane etc.

{n: generator} an electronic device for producing a signal voltage

{n: gesture, motion} the use of movements (especially of the hands) to communicate familiar or prearranged signals

{n: goniometer} direction finder that determines the angular direction of incoming radio signals

{n: green light, go-ahead} a signal to proceed

{n: guided missile} a rocket-propelled missile whose path can be controlled during flight either by radio signals or by internal homing devices

{n: gun} the discharge of a firearm as signal or as a salute in military ceremonies
"two runners started before the gun"
"a twenty gun salute"

{n: half-mast} a position some distance below the top of the mast to which a flag is lowered in mourning or to signal distress

{n: hearing dog} dog trained to assist the deaf by signaling the occurrence of certain sounds

{n: heterodyne receiver, superheterodyne receiver, superhet} a radio receiver that combines a locally generated frequency with the carrier frequency to produce a supersonic signal that is demodulated and amplified

{n: high sign} a silent signal of warning or recognition
"she started to speak but he gave her the high sign"

{n: imminent abortion, threatened abortion} the appearance of symptoms that signal the impending loss of the products of conception

{n: indicator} a signal for attracting attention

{n: information, selective information, entropy} (communication theory) a numerical measure of the uncertainty of an outcome
"the signal contained thousands of bits of information"

{n: input signal, input} signal going into an electronic system

{n: intensity, strength, intensity level} the amount of energy transmitted (as by acoustic or electromagnetic radiation)
"he adjusted the intensity of the sound"
"they measured the station's signal strength"

{n: interrupt} a signal that temporarily stops the execution of a program so that another procedure can be carried out

{n: kinescope, picture tube, television tube} a cathode-ray tube in a television receiver; translates the received signal into a picture on a luminescent screen

{n: light} a visual warning signal
"they saw the light of the beacon"
"there was a light at every corner"

{n: local oscillator, heterodyne oscillator} an oscillator whose output heterodynes with the incoming radio signal to produce sum and difference tones

{n: loudspeaker, speaker, speaker unit, loudspeaker system, speaker system} electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance

{n: magnetic tape, mag tape, tape} memory device consisting of a long thin plastic strip coated with iron oxide; used to record audio or video signals or to store computer information
"he took along a dozen tapes to record the interview"

{n: maroon} an exploding firework used as a warning signal

{n: medium} an intervening substance through which signals can travel as a means for communication

{n: message} a communication (usually brief) that is written or spoken or signaled
"he sent a three-word message"

{n: metal detector} detector that gives a signal when it detects the presence of metal; used to detect the presence of stray bits of metal in food products or to find buried metal

{n: mind reader, telepathist, thought-reader} a magician who seems to discern the thoughts of another person (usually by clever signals from an accomplice)

{n: mixer} electronic equipment that mixes two or more input signals to give a single output signal

{n: modulation} (electronics) the transmission of a signal by using it to vary a carrier wave; changing the carrier's amplitude or frequency or phase

{n: monitor, monitoring device} display produced by a device that takes signals and displays them on a television screen or a computer monitor

{n: multichannel recorder} a recorder with two or more channels; makes continuous records of two or more signals simultaneously

{n: multiplex} communicates two or more signals over a common channel

{n: nonlinear distortion, amplitude distortion} distortion that occurs when the output signal does not have a linear relation to the input signal

{n: omnidirectional antenna, nondirectional antenna} an antenna that sends or receives signals equally in all directions

{n: one-way light time, OWLT} the elapsed time it takes for light (or radio signals) to travel between the Earth and a celestial object

{n: output signal, output} signal that comes out of an electronic system

{n: overdrive} the state of high or excessive activity or productivity or concentration
"Troops are ready to go into overdrive as soon as the signal is given"
"Melissa's brain was in overdrive"

{n: pinning} a mutual promise of a couple not to date anyone else; on college campuses it was once signaled by the giving of a fraternity pin

{n: pulse modulation} modulation that imposes a signal on a train of pulses

{n: quarterback, signal caller, field general} (football) the person who plays quarterback

{n: quarterback, signal caller, field general} the position of the football player in the backfield who directs the offensive play of his team
"quarterback is the most important position on the team"

{n: quartz crystal} a thin plate or small rod of quartz cut along certain lines and ground so that it can produce an electric signal at a constant frequency; used in crystal oscillators

{n: radar beacon, racon} a device that, on receiving radar signals, transmits coded signals in response to help navigators determine their position

{n: radar echo} an electronic signal that has been reflected back to the radar antenna; contains information about the location and distance of the reflecting object

{n: radio antenna, radio aerial} omnidirectional antenna comprising the part of a radio receiver by means of which radio signals are received

{n: radio beacon, beacon} a radio station that broadcasts a directional signal for navigational purposes

{n: radio beacon} a characteristic signal emitted by a transmitter used for navigation

{n: radio beam, beam} a signal transmitted along a narrow path; guides pilots in darkness or bad weather

{n: radio compass} a direction finder that gives a bearing by determining the direction of incoming radio signals

{n: radio receiver, receiving set, radio set, radio, tuner, wireless} an electronic receiver that detects and demodulates and amplifies transmitted signals

{n: radio signal} a radio wave used to transmit and receive messages

{n: radio transmitter} transmitter that is the part of a radio system that transmits signals

{n: rallying} the act of mobilizing for a common purpose
"the bell was a signal for the rallying of the whole neighborhood"

{n: recall} a bugle call that signals troops to return

{n: receiver, receiving system} set that receives radio or tv signals

{n: recording} signal encoding something (e.g., picture or sound) that has been recorded

{n: red flag} a flag that serves as a warning signal
"we didn't swim at the beach because the red flag was up"

{n: red light} the signal to stop

{n: repeater} (electronics) electronic device that amplifies a signal before transmitting it again
"repeaters can be used in computer networks to extend cabling distances"

{n: reproducer} an audio system that can reproduce and amplify signals to produce sound

{n: respiratory center} the center in the medulla oblongata and pons that integrates sensory information about the level of oxygen and carbon dioxide in the blood and determines the signals to be sent to the respiratory muscles

{n: retreat} (military) a bugle call signaling the lowering of the flag at sunset

{n: retreat} (military) a signal to begin a withdrawal from a dangerous position

{n: reveille, wake-up signal} (military) signal to wake up

{n: reveille} a signal to get up in the morning; in the military it is a bugle call at sunrise

{n: ring-around-the-rosy, ring-around-a-rosy, ring-a-rosy} a children's game in which the players dance around in a circle and at a given signal all squat

{n: roughness} harsh or severe speech or behavior
"men associate the roughness of nonstandard working-class speech with masculinity"
"the roughness of her voice was a signal to keep quiet"

{n: round-trip light time, RTLT} the elapsed time it takes for a signal to travel from Earth to a spacecraft (or other body) and back to the starting point

{n: sampling frequency} (telecommunication) the frequency of sampling a continuously varying signal

{n: satellite television, satellite TV} a television system in which the signal is transmitted to an orbiting satellite that receives the signal and amplifies it and transmits it back to earth

{n: scanner, electronic scanner} a radio receiver that moves automatically across some selected range of frequencies looking for some signal or condition
"they used scanners to monitor police radio channels"

{n: semaphore} an apparatus for visual signaling with lights or mechanically moving arms

{n: set} any electronic equipment that receives or transmits radio or tv signals
"the early sets ran on storage batteries"

{n: signal box} a building from which signals are sent to control the movements of railway trains

{n: signal detection, detection} the detection that a signal is being received

{n: signal fire, signal light} a fire set as a signal

{n: signal level} the amplitude level of the desired signal

{n: signal, signaling, sign} any communication that encodes a message
"signals from the boat suddenly stopped"

{n: signal-to-noise ratio, signal-to-noise, signal/noise ratio, signal/noise, S/N} the ratio of signal intensity to noise intensity

{n: signaler, signaller} someone who communicates by signals

{n: signaling device} a device used to send signals

{n: signalman} a railroad employee in charge of signals and point in a railroad yard

{n: signals intelligence, SIGINT} intelligence information gathered from communications intelligence or electronics intelligence or telemetry intelligence

{n: signal} an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes

{n: signal} any incitement to action
"he awaited the signal to start"
"the victory was a signal for wild celebration"

{n: siren} a warning signal that is a loud wailing sound

{n: siren} an acoustic device producing a loud often wailing sound as a signal or warning

{n: skip distance} the shortest distance that permits radio signals (of a given frequency) to travel from the transmitter to the receiver by reflection from the ionosphere

{n: sleeper nest} a nest of sleepers awaiting a prearranged signal
"sleeper nests of Islamic terrorists were capable of launching major attacks in Europe"

{n: sleeper} a spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signal

{n: squelch circuit, squelch, squelcher} an electric circuit that cuts off a receiver when the signal becomes weaker than the noise

{n: starter, dispatcher} the official who signals the beginning of a race or competition

{n: starting signal, start} a signal to begin (as in a race)
"the starting signal was a green light"
"the runners awaited the start"

{n: stoplight, brake light} a red light on the rear of a motor vehicle that signals when the brakes are applied to slow or stop

{n: stopping point, finale, finis, finish, last, conclusion, close} the temporal end; the concluding time
"the stopping point of each round was signaled by a bell"
"the market was up at the finish"
"they were playing better at the close of the season"

{n: storm signal} a signal announcing the approach of a storm (particularly a storm of marked violence)

{n: system clock} an electronic device in a computer that issues a steady high-frequency signal that synchronizes all the internal components

{n: taps, lights-out} (military) signal to turn the lights out

{n: tattoo} a drumbeat or bugle call that signals the military to return to their quarters

{n: telegraph key} key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed

{n: telegraphic signal, radiotelegraphic signal} a signal transmitted by telegraphy

{n: telephone bell} electric bell that rings to signal a call

{n: telephone receiver, receiver} earphone that converts electrical signals into sounds

{n: telephone wire, telephone line, telegraph wire, telegraph line} the wire that carries telegraph and telephone signals

{n: telephone, phone, telephone set} electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds
"I talked to him on the telephone"

{n: television receiver, television, television set, tv, tv set, idiot box, boob tube, telly, goggle box} an electronic device that receives television signals and displays them on a screen
"the British call a tv set a telly"

{n: television-camera tube, television pickup tube} a tube that rapidly scans an optical image and converts it into electronic signals

{n: time signal} a signal (especially electronic or by radio) indicating the precisely correct time

{n: timer} a timepiece that measures a time interval and signals its end

{n: traffic light, traffic signal, stoplight} a visual signal to control the flow of traffic at intersections

{n: transmission} communication by means of transmitted signals

{n: transmitter, sender} set used to broadcast radio or tv signals

{n: transponder} electrical device designed to receive a specific signal and automatically transmit a specific reply

{n: twilight zone, no man's land} the ambiguous region between two categories or states or conditions (usually containing some features of both)
"but there is still a twilight zone, the tantalizing occurrences that are probably noise but might possibly be a signal"
"in the twilight zone between humor and vulgarity"
"in that no man's land between negotiation and aggression"

{n: visual display unit, VDU} (British) a device for displaying input signals as letters on a screen; usually has a keyboard

{n: visual signal} a signal that involves visual communication

{n: watch fire} a fire lighted at night as a signal

{n: wave, waving, wafture} the act of signaling by a movement of the hand

{n: whistle stop, flag stop, way station} a small railway station between the principal stations or a station where the train stops only on a signal

{n: white flag, flag of truce} flag consisting of a piece of white cloth that is hoisted to signal surrender or to ask for a truce

{n: wink} closing one eye quickly as a signal

{n: wireless local area network, WLAN, wireless fidelity, WiFi} a local area network that uses high frequency radio signals to transmit and receive data over distances of a few hundred feet; uses ethernet protocol

{n: yellow light} the signal to proceed with caution

{v: answer} respond to a signal
"answer the door"
"answer the telephone"

{v: beckon, wave} signal with the hands or nod
"She waved to her friends"
"He waved his hand hospitably"

{v: bespeak, betoken, indicate, point, signal} be a signal for or a symptom of
"These symptoms indicate a serious illness"
"Her behavior points to a severe neurosis"
"The economic indicators signal that the euro is undervalued"

{v: bleep} emit a single short high-pitched signal
"The computer bleeped away"

{v: call} send a message or attempt to reach someone by radio, phone, etc. ; make a signal to in order to transmit a message
"Hawaii is calling!"
"A transmitter in Samoa was heard calling"

{v: flag down} signal to stop
"Let's flag down a cab--it's starting to rain"
"The policeman flagged down our car"

{v: flag} communicate or signal with a flag

{v: frown, glower, lour, lower} look angry or sullen, wrinkle one's forehead, as if to signal disapproval

{v: heliograph} signal by means of a mirror and the using the sun's rays

{v: interrogate} transmit (a signal) for setting off an appropriate response, as in telecommunication

{v: jam, block} interfere with or prevent the reception of signals
"Jam the Voice of America"
"block the signals emitted by this station"

{v: mix} as of electronic signals
"mixing sounds"

{v: pick up, receive} recieve (perceptual input)
"pick up a signal"

{v: quantize, quantise} telecommunications: approximate (a signal varying continuously in amplitude) by one whose amplitude is restricted to a prescribed set of discrete values

{v: receive} convert into sounds or pictures
"receive the incoming radio signals"

{v: semaphore} send signals by or as if by semaphore

{v: send a message} give or constitute a signal, not necessarily verbally


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