What is a hair of a horse, especially one from the mane or tail; the hairs of the mane or tail taken collectively; a fabric or tuft made of such hairs. Horsehair worm (Zoöl.), the hair worm or gordius called?

horsehair — A hair of a horse, especially one from the mane or tail; the hairs of the mane or tail taken collectively; a fabric or tuft made of such hairs. Horsehair worm (Zoöl.), the hair worm or gordius. (Webster's 1913.)