telegrapher

noun

1. Obsolete any signaling apparatus
2. an apparatus or system that converts a coded message into electric impulses and sends it to a distant receiver: originally, Morse code signals were sent using a key that opened and closed the circuit to activate an electromagnetic sounder, but now teletypewriters, computers, radio and microwave signals, satellites, and lasers are used

transitive verb

1. to send (a message) by telegraph
2. to send a telegram to
3. Informal to signal (an intended action, decision, etc.) unintentionally to another, as by a gesture or look

intransitive verb