circuit/ˋsɝkIt; ˈsɜːkət or ˈsɜːkIt/n [C] 1 a set of wires etc that an electric current flows around 电路﹐线路: an electrical circuit 电路2 the tennis/lecture/club etc circuit all the places that are usually visited by someone who plays tennis etc 网球巡回赛/巡回讲座/俱乐部巡回表演等各站: a well-known speaker on the international lecture circuit 一位在世界各地作巡回演讲的著名演讲人3 a path that forms a circle around an area, or a journey along this path 环形道路[路线]﹔环行: We did a circuit of the old city walls. 我们沿老城墙绕了一圈。4 BrE a track where people race cars, bicycles etc【英】赛车道