electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds
I talked to him on the telephone.
source: WordNet 3.0
(phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language
source: WordNet 3.0
electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear
It was not the typing but the earphones that she disliked.
source: WordNet 3.0
Colloq. for Telephone.
source: Webster 1913
verb
get or try to get into communication (with someone) by telephone
I tried to call you all night. Take two aspirin and call me in the morning.