- any of various slender, flexible processes or appendages in animals, especially invertebrates, that serve as organs of touch, prehension, etc.; feeler.
- a sensitive filament or process, as one of the glandular hairs of the sundew.
- any of various elongated flexible organs that occur near the mouth in many invertebrates and are used for feeding, grasping, etc
- any of the hairs on the leaf of an insectivorous plant that are used to capture prey
- something resembling a tentacle, esp in its ability to reach out or grasp
