Horsehair

Noun

 * 1) the hair of a horse, especially from the mane and tail, used for upholstery
 * 2) a fabric made from this

Thesaurus
bristle, capillament, catgut, chord, cilium, coat, fiddlestring, fleece, fur, hair, mane, nylon string, pelt, pile, pubescence, pubic hair, setula, shag, steel string, string, wool, wound string