o·ver·turn/ˏovə`tɜn; ˌəʊvəˈtɜːn/ v 1 [I,T] if something overturns, or you overturn it, it turns upside down or falls over on its side （使）颠倒; （使）翻倒: The car overturned on a country road. 汽车在一条乡村公路上翻倒了。 2 overturn a ruling/verdict/law to officially change a decision made by a court 推翻判决/裁决/法律