1
- (of motion) revolving around a centre or axis; rotational旋转的; 轮转的; 转动的：
a rotary motion.
转动。
1.1
- (of a thing) acting by means of rotation, especially (of a machine) operating through the rotation of some part（物体, 尤指机器）旋转式的; 通过旋转部件旋转的：
a rotary mower.
一台旋转式割草机。
(pl. -ies)
1
- a rotary machine, engine, or device旋转式机器; 转缸式发动机; 旋转式装置。
2
- N. Amer. a traffic roundabout〈北美〉环行交叉, 环行交通枢纽。
词源
mid 18th cent.: from medieval Latin rotarius, from rota 'wheel'.