[roh-tuh-ree] 
adjective, noun, plural -ries.| 1. | turning or capable of turning around on an axis, as a wheel. |
| 2. | taking place around an axis, as motion. |
| 3. | having a part or parts that turn on an axis, as a machine. |
| 4. | a rotary device or machine. |
| 5. | Chiefly Northeastern U.S. traffic circle. |
| 6. | Also called rotary converter. Electricity. synchronous converter. |
| 7. | (initial capital letter ) Rotary Club. |
| a synchronous machine for converting alternating current to direct current, or vice versa, in which the armature winding is connected to collector rings and to a commutator. |