Propeller
Pro`pel´ler
| n. | 1. | One who, or that which, propels. | |||
| 2. | A contrivance for propelling a steam vessel, usually consisting of a screw placed in the stern under water, and made to revolve by an engine; a propeller wheel. | ||||
| 3. | A steamboat thus propelled; a screw steamer.
| ||||
| Noun | 1. |  propeller - a mechanical device that rotates to push against air or waterSynonyms: propellor |