roundabout² n [C] BrE 【英】 1 a circular area where several roads meet, which you have to drive around until you reach the road you want 环岛〔道路交叉处的环形路〕,环形交叉路口; TRAFFIC CIRCLE AmE 【美】: Turn left at the next roundabout. 在下一个环形交叉路口向左转。 2 a circular structure that children play on by sitting on it and making it spin around 〔儿童坐的〕旋转椅