‖Vi‐bris″sa (?), n.; pl.Vibrissæ (#). [L. vibrissae, pl., the hairs in the nostrils of man, fr. vibrare to vibrate; — so called because touching them tickles a person, and causes him to shake his head.] 1. (Anat.) One of the specialized or tactile hairs which grow about the nostrils, or on other parts of the face, in many animals, as the so-called whiskers of the cat, and the hairs of the nostrils of man.
2. (Zoöl.) The bristlelike feathers near the mouth of many birds.