signal

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NGSL Rank: 1499
signal
ˈsɪɡn(ə)l Listen
Meanings
noun
  • a gesture, action, or sound that is used to convey information or instructions, typically by prearrangement between the parties concerned.
    E.g. the firing of the gun was the signal for a chain of beacons to be lit
  • an electrical impulse or radio wave transmitted or received.
    E.g. equipment for receiving TV signals
  • an apparatus on a railway, typically a coloured light or a semaphore, giving indications to train drivers of whether or not the line is clear.
    E.g. the driver of the mail train overran a signal at danger and ran into the rear of an express
verb
  • convey information or instructions by means of a gesture, action, or sound.
    E.g. hold your fire until I signal
adjective
  • striking in extent, seriousness, or importance; outstanding.
    E.g. their signal failure to achieve a satisfactory solution to the problem

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signal
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