phone (n.1)

by 1878 [Des Moines Register, May 16], colloquial shortening of telephone (n.), "generally applied to the receiver, but sometimes to the whole apparatus" [Century Dictionary, 1895]. Phone book "publication listing telephone numbers and their associated names" is by 1920; phone booth "small enclosure or stall provided with a public pay-telephone" is by 1906; phone bill "statement of charges for telephone service" is by 1901; phone number (short for telephone number) is by 1906.

phone (v.)

"to call on the telephone," 1884, colloquial, from phone (n.). Related: Phoned; phoning.

phone (n.2)

"elementary sound of a spoken language, one of the primary elements of utterance," 1866, from Greek phōnē "sound, voice" (from PIE root *bha- (2) "to speak, tell, say").

Others are reading

Definitions of phone from WordNet
phone (n.)
electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds;
Synonyms: telephone / telephone set
phone (n.)
(phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language;
Synonyms: speech sound / sound
phone (n.)
electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear;
Synonyms: earphone / earpiece / headphone
phone (v.)
get or try to get into communication (with someone) by telephone;
Synonyms: call / telephone / call up / ring