signaller

noun
🔊/ˈsɪɡnələ(r)/
🔊/ˈsɪɡnələr/
(US English signaler)
(also signalman)
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  1. a person whose job is operating signals on a railway(铁路上的)信号员,信号工Topics Transport by bus and trainc2
  2. a person trained to give and receive signals in the army or navy(军队的)信号兵,通信兵Topics War and conflictc2