bobby pin

noun

1. a flat, springlike metal hairpin having the prongs held close together by tension.

bobby pin

noun

1. Brit terms: hairgrip.  kirby grip. a metal hairpin bent in order to hold the hair in place

Word History and Origins

Origin of bobby pin¹

1935–40, perhaps Bobby (proper name), by association with bobbed hair ( bob ² ), in which such pins are used