three-point turn
noun [ C ] uk/ˌθriː.pɔɪnt ˈtɜːn/ us/ˌθriː.pɔɪnt ˈtɝːn/
（汽车的）三点转向
a method of turning a car round to face the other direction by moving forwards across the road, then backwards in the opposite direction across the road and then forwards again