Meaning of ANTENNA in English
■ noun ( plural ~e -ni: )
1》 Zoology a long, thin sensory appendage found in pairs on the heads of insects and some other arthropods.
2》 ( plural also ~s ) chiefly N. Amer. or technical an aerial.
3》 ( ~e ) the faculty of instinctively detecting and interpreting subtle signs: his political ~e remain as sharp as ever.
C17: from L., alt. of antemna 'yard' (of a ship), used in plural to translate Gk keraioi 'horns (of insects)'.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004