hairpin bend 
(North American hairpin turn)
noun
A sharp U-shaped bend in a road.The hairpin bend in the snow-dusted mountain road is looming....
- He came to a hairpin bend where he saw Norma sitting in her parked car.
- Though the panther was many hundred feet below, it could easily run through the bush, scramble up the embankment and surprise them around a hairpin bend!
- green pollack
- green pound
- green racer
- green ray
- green revolution
- green ribbon
- Green River
- green road
- green rod
- green roof
- green room
- green rose
- green rushes
- green salad
- green-salted
- greensand
- green sandpiper
- green sauce
- Greensboro
- green schist
- greenschist facies
- green screen
- green seal
- green sea turtle
- greens fee