From Longman Dictionary of Contemporary Englishhairpin bendˌhairpin ˈbend (also hairpin turn American English) noun [countable] TTRa very sharp U-shaped curve in a road
Examples from the Corpus
hairpin bend• She floated above and ahead of them, and her eyes narrowed on to a shimmer of water at a hairpin bend.• When the road turns sharply left in a hairpin bend, take the footpath ahead into the woodland.• When not thinking about puking your guts up round every hairpin bend, scenery magnificent. 