電でん鍵けんでんけんMeanings1nountelegraph keyA switching device used to send Morse code in telegraphy. Technical term, not used in everyday conversation.無む線せん通つう信しん士しは電でん鍵けんを素す早ばやく操そう作さしてモールス信しん号ごうを送おくった。The radio operator quickly worked the telegraph key to send Morse code.
