feeler

feeler (http://definr.com/feeler)

     n 1: one of a pair of mobile appendages on the head of e.g.
          insects and crustaceans; typically sensitive to touch
          and taste [syn: antenna]
     2: a tentative suggestion designed to elicit the reactions of
        others; "she rejected his advances" [syn: overture, advance,
         approach]
     3: sensitivity similar to that of a receptor organ; "he had a
        special antenna for public relations" [syn: antenna]
     4: slender tactile process on the jaws of a fish [syn: barbel]