Definition of keysender in English:

keysender

noun

  • 1historical, rare A machine for generating a Morse signal with a single keystroke.

  • 2historical Especially at a telephone exchange: a mechanical device for establishing connection with a particular telephone by pressing a succession of numbered keys (instead of using a dial).

Origin

Early 20th century. From key + sender.

Pronunciation

keysender

/ˈkiːsɛndə/