Definition of whisker

• n. - One who, or that which, whisks, or moves with a quick, sweeping motion.
• n. - Formerly, the hair of the upper lip; a mustache; -- usually in the plural.
• n. - That part of the beard which grows upon the sides of the face, or upon the chin, or upon both; as, side whiskers; chin whiskers.
• n. - A hair of the beard.
• n. - One of the long, projecting hairs growing at the sides of the mouth of a cat, or other animal.
• n. - Iron rods extending on either side of the bowsprit, to spread, or guy out, the stays, etc.