seta

A stiff hair, bristle, or bristlelike process or part on an organism, especially an invertebrate.

The stalk of a moss or liverwort capsule.

In zoology and anatomy, a bristle; a chæta; a stiff, stout hair; a fine, slender spine or prickle; any setaceous appendage.

In botany, a bristle of any sort; a stiff hair; a slender, straight prickle; also, the stalk that supports the theca, capsule, or sporangium of mosses.

Any slender, more or less rigid, bristlelike 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.

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.

One of the spinelike feathers at the base of the bill of certain birds.

A bristle or hair

The stalk of a moss sporangium, or occasionally in a liverwort.