A sensory appendage on the head of an animal, such as an insect or crustacean, used for touching or sensing the environment. The ant used its feelers to navigate through the narrow tunnel.
A tentative proposal or suggestion made to gauge someone's reaction or interest. He sent out a feeler to see if she would be interested in collaborating on the project.
A person who is sensitive to the emotions and feelings of others. As a natural feeler, she could easily sense when her friends were upset.
A thin strip of metal or plastic used to measure a gap or clearance, especially as part of a feeler gauge. Insert a 0.015-inch feeler between the valve stem and the rocker arm.