<P> A hairpin turn ( also hairpin bend , hairpin corner , etc . ) , named for its resemblance to a hairpin / bobby pin , is a bend in a road with a very acute inner angle , making it necessary for an oncoming vehicle to turn about 180 ° to continue on the road . Such turns in ramps and trails may be called switchbacks in American English , by analogy with switchback railways . In British English `` switchback '' is more likely to refer to a heavily undulating road -- a use extended from the rollercoaster and the other type of switchback railway . </P>
another name for a hairpin bend crossword clue
hairpin bend hairpin corner switchbacks