Nouns

(n)antenna, feelerone of a pair of mobile appendages on the head of e.g. insects and crustaceans; typically sensitive to touch and taste
(n)overture, advance, approach, feelera tentative suggestion designed to elicit the reactions of others“she rejected his advances”
(n)antenna, feelersensitivity similar to that of a receptor organ“he had a special antenna for public relations”
(n)barbel, feelerslender tactile process on the jaws of a fish