hairpin

[ hair-pin ]
/ ˈhɛərˌpɪn /

noun

a slender U-shaped piece of wire, shell, etc., used by women to fasten up the hair or hold a headdress.

adjective

(of a road, curve in a road, etc.) sharply curved back, as in a U shape: a hairpin turn.

RELATED WORDS

Origin of hairpin

First recorded in 1770–80; hair + pin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for hairpin

hairpin

/ (ˈhɛəˌpɪn) /

noun

a thin double-pronged pin used by women to fasten the hair
(modifier) (esp of a bend in a road) curving very sharply
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012