feeler

Noun

• slender tactile process on the jaws of a fish

• sensitivity similar to that of a receptor organ
  • he had a special antenna for public relations
    

• a tentative suggestion designed to elicit the reactions of others
  • she rejected his advances
    

• one of a pair of mobile appendages on the head of e.g. insects and crustaceans; typically sensitive to touch and taste

Related words

• Synonyms: 
  barbel , antenna , overture , advance , approach