blow the whistle »
To make a piercing sound which signals a referee's action or the end of a game.
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bridge »
A statement, such as an offer, that signals a possibility of accord.
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bush telegraph »
A system used by undeveloped societies in remote regions for communication over long distances, such as drum sounds, word-of-mouth relay, or smoke signals.
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come in »
Of a broadcast, such as radio or television, to have a strong enough signal to be able to be received well.
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dead »
Completely inactive; without power; without a signal.
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dead air »
An unintended interruption in a radio broadcast during which there is no sound; a similar interruption of a television broadcast in which there is neither sound nor a video signal.
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flag down »
Use a flag or some kind of signal to get the attention of someone.
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over and out »
Used to signal the end of a conversation, especially one conducted by CB radio or the like.
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red flag »
A cue, warning, or alert; a sign or signal that something is wrong.
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red light »
A warning light, especially as a traffic signal indicating ‘stop’..
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see a man about a horse »
A message signaling one needs to go missing for a short while, for any reason, without giving a real explanation.
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sign off »
Term used to describe the closing of a radio or television station's studios and cessation of a broadcasting signal, usually during the overnight hours.
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smoke signal »
A method of long-distance communication sometimes used in ancient and undeveloped societies, consisting of messages conveyed by means of columns or intermittent puffs of smoke.
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smoke signal »
A type of flare or combustion device sometimes used as a distress signal.
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smoke signal »
An indirect message or indication, especially concerning a future event.
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