1. (n.) Any slender, more or less rigid, bristle like organ or part; as the hairs of a caterpillar, the slender spines of a crustacean, the hairlike processes of a protozoan, the bristles or stiff hairs on the leaves of some plants, or the pedicel of the capsule of a moss.

2. (n.) One of the movable chitinous spines or hooks of an annelid. They usually arise in clusters from muscular capsules, and are used in locomotion and for defense. They are very diverse in form.

3. (n.) One of the spine like feathers at the base of the bill of certain birds.

barb barbel bristle capillament cilium coat fleece fur hair horsehair mane pelt pile pubescence pubic hair setula setule shag striga stubble wool