telegraph key

1. 1.

   key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed

   Broaderkey

Questions about telegraph key

What does telegraph key mean?

telegraph key means "key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed".

Is telegraph key a common word?

telegraph key is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.