an apparatus, system, or process for transmission of sound or speech to a distant point, especially by an electric device.
Definition: 2
to speak to or summon (a person) by telephone.
Definition: 3
to send (a message) by telephone.
Definition: 4
to send a message by telephone.
Definition: 5
Also called telephone set. an electrical device for transmitting speech, consisting of a microphone and receiver mounted on a handset (as modifier): a telephone receiver