hairgrip

noun

1. 发夹
   a small thin piece of metal or plastic folded in the middle, used by women for holding their hair in place

1. 小发夹
   A hairgrip is a small piece of metal or plastic bent back on itself, which you use to hold your hair in position.

in AM, use 美国英语用 bobby pin

noun

1. a flat wire hairpin whose prongs press tightly together
   1. in Britain they call a bobby pin a grip

   Synonym:    bobby pingrip