Definitions:
a sharp projection near the end of an arrow, fish hook, or similar object, which is angled away from the main point so as to make extraction difficult.

a fleshy filament at the mouth of some fish, such as barbel and catfish.

a freshwater fish with barbels around the mouth, popular in aquaria.

a small horse of a hardy breed originally from north africa.

cut or style (a person's hair)