Pronunciation

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Singular
signalman

Plural
signalmen

 
A signalman using semaphore for "M"
  1. (countable) A signalman is a person who works on the railway and changes the railway signals.
    The signalman changed the light from red to green to let the train continue.
  2. (countable) A signalman is a sailor who sends signals from the ship.
    The signalman waved his semaphore flags to send a message to the admiral's ship.
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