noun
Meaning 1
An early telephone with a diaphragm of soft iron placed close to the pole of a magnet upon which is wound a coil of fine wire. Its vibrations produce corresponding currents in the wire by induction.
Definition source: English Wiktionary via Wiktextract
Usage: dated
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided