U-turn

n 1 turn of 180 (by a car, etc) so as to face in the opposite direction without reversing （汽车等的）180转弯, 向後转, 掉头: No U-turns, ie as a sign on motorways, etc. 禁止後转弯（高速公路等的标牌用语）. 2 (idm 习语) do a `U-turn (infml 口) reverse one's policy 彻底改变政策: The government has done a U-turnon its economic policy. 政府的经济政策已经完全改变了.

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