a rigid glossy kind of hair, found on swine, and much used by brushmakers, &c.

Bristles, rough and undressed, pay a duty of 1s. 2½d. the dozen pound, whereof 1s. 2½d. is drawn back on exporting them; whereas dressed bristles pay a duty of 2s. 4½d. the dozen pound, whereof 2s. 1½d. is drawn back on exportation.

The whiskers of cats are also sometimes called bristles; as are the quills of the porcupine.