From Longman Dictionary of Contemporary Englishantennaan‧ten‧na /ænˈtenə/ noun [countable] 1 
(plural antennae /-niː/)HBI one of two long thin parts on an insect’s head, that it uses to feel things2 TAMT (plural antennas or antennae) a wire rod etc used for receiving radio and television signals SYN aerial television antennas
(plural antennae /-niː/)HBI one of two long thin parts on an insect’s head, that it uses to feel things2 TAMT (plural antennas or antennae) a wire rod etc used for receiving radio and television signals SYN aerial television antennasExamples from the Corpus
antenna• It will raise an antenna and run a cable from the truck to a camera to record pictures of the burning building.• The null in the directional response of such an antenna is quite independent of the Q of the coil.• It appears that the in-cockpit antenna is the problem.• Without mathematical modelling, the problem would not have been discovered until the complete antenna subsystem had been built and tested.• It keeps our main antenna aimed at Earth to within a few thousandths of a degree.• Certainly, few entomologists doubt that the amazingly intricate structure of moths' antennae are specific pheromone detectors.• A man beside a pickup truck was standing alongside the road, twirling a radio antenna.• It was a slender black creature with long yellow antennae and yellow-ringed legs.Origin antenna (1600-1700) Latin “pole holding up a sail” 