Definition of signalman noun from the Oxford Advanced American Dictionary

     

    signalman

     noun
    noun
    NAmE//ˈsɪɡnəlmən//
     
    (pl. signalmen
    NAmE//ˈsɪɡnəlmən//
     
    )
    (also signaler)
     
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  1. 1 a person trained to give and receive signals in the army or navy
  2. 2 a person whose job is operating signals on a railroad
See the Oxford Advanced Learner's Dictionary entry: signalman