| Noun | 1. | feeler - one of a pair of mobile appendages on the head of e.g. insects and crustaceans; typically sensitive to touch and tastetentacle - any of various elongated tactile or prehensile flexible organs that occur on the head or near the mouth in many animals used for feeling or grasping or locomotion | |
| 2. | feeler - a tentative suggestion designed to elicit the reactions of others; "she rejected his advances" | |
| 3. | feeler - sensitivity similar to that of a receptor organ; "he had a special antenna for public relations" | |
| 4. | feeler - slender tactile process on the jaws of a fishtentacle - any of various elongated tactile or prehensile flexible organs that occur on the head or near the mouth in many animals used for feeling or grasping or locomotion | |