I. ˈ ̷ ̷ˌ ̷ ̷ noun
1. : a pin to hold the hair in place ; specifically : a two-pronged U-shaped pin made of wire, plastic, or bone
2.
a. : something shaped like a hairpin ; specifically : a sharp turn in a road having relatively parallel approaches
at the top of a long swinging hairpin he looked back and saw the moving lights of a car — Wallace Stegner
b. : two closed slalom gates placed one immediately below the other on a ski slope
II. adjective
: having the shape of a hairpin
hairpin curve
III. verb
Etymology: hairpin (I)
transitive verb
West : to get up on (as a horse) : mount
hairpinning … at sight anything on four hoofs — P.A.Rollins
intransitive verb
: to make a hairpin turn
the road hairpins up the mountainside — Tom Marvel