| noun | a road junction at which traffic streams circularly around a central island “the accident blocked all traffic at the rotary” |
| noun | electrical converter consisting of a synchronous machine that converts alternating to direct current or vice versa |
| adjective | relating to or characterized by rotation “rotary dial” |
| adjective | describing a circle; moving in a circle “the circular motion of the wheel” |
| circle | noun | any circular or rotating mechanism |