'antenna' definitions:

Definition of 'antenna'

From: WordNet
noun
An electrical device that sends or receives radio or television signals [syn: antenna, aerial, transmitting aerial]
noun
Sensitivity similar to that of a receptor organ; "he had a special antenna for public relations" [syn: antenna, feeler]
noun
One of a pair of mobile appendages on the head of e.g. insects and crustaceans; typically sensitive to touch and taste [syn: antenna, feeler]

Synonyms of 'antenna'

From: Moby Thesaurus