1. 旋转的;转动的
Rotary means turning or able to turn round a fixed point.

2. (机器)有旋转部件的
Rotary is used in the names of some machines that have parts that turn round a fixed point.

1. electrical converter consisting of a synchronous machine that converts alternating to direct current or vice versa

Synonym: synchronous converterrotary converter

2. a road junction at which traffic streams circularly around a central island

e.g. the accident blocked all traffic at the rotary

Synonym: traffic circlecircleroundabout