"feeler" in the noun sense
1. antenna, feeler
one of a pair of mobile appendages on the head of e.g. insects and crustaceans typically sensitive to touch and taste
2. overture, advance, approach, feeler
a tentative suggestion designed to elicit the reactions of others
"she rejected his advances"
3. antenna, feeler
sensitivity similar to that of a receptor organ
"he had a special antenna for public relations"
4. barbel, feeler
slender tactile process on the jaws of a fish
Source: WordNet® (An amazing lexical database of English)
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