Definition of antenna noun from the Oxford Advanced Learner's Dictionary

antenna

noun
ænˈtenə
 
; ænˈtenə
 
 
1 plural antennae
ænˈteniː
 
; ænˈteniː
 
either of the two long thin parts on the heads of some insects and some animals that live in shells, used to feel and touch things with
Synonym
feeler
(figurative)The minister was praised for his acute political antennae (= ability to understand complicated political situations).
2 plural antennas or antennae (especially North American English) (British English also aerial) a piece of equipment made of wire or long straight pieces of metal for receiving or sending radio and television signalsradio antennas
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