rotary

名词 rotary:

1. a road junction at which traffic streams circularly around a central island
   同义词：traffic circle, circle, roundabout
2. electrical converter consisting of a synchronous machine that converts alternating to direct current or vice versa
   同义词：synchronous converter, rotary converter

形容词 rotary:

1. relating to or characterized by rotation
2. marked by or moving in a circle
   同义词：circular

1. A device for transmitting rotary motion, consisting of a handle or arm attached at right angles to a shaft.
   曲柄一个传递转动的部件，包括一个手柄或把手与一个轴直角相连
2. The gardener asked me for a rotary lawn mower.
   园丁向我要一台旋转式割草机。

ro.ta.ry

adj.（形容词）
Of, relating to, causing, or characterized by rotation, especially axial rotation.
旋转的，转动的：属于、有关、引起或以转动为特征的，尤指绕轴转动
n.（名词）
【复数】 ro.ta.ries
A part or device that rotates around an axis.
绕轴旋转的部件或装置
A traffic circle.
环形交叉，环形交通枢纽

来源：
Medieval Latin rot3rius
中世纪拉丁语 rot3rius
from Latin rota [wheel] * see ret-
源自 拉丁语 rota [轮子] *参见 ret-