| sprocket | | |
| n. (artifact) | 1. sprocket | roller that has teeth on the rims to pull film or paper through. |
| ~ camera, photographic camera | equipment for taking photographs (usually consisting of a lightproof box with a lens at one end and light-sensitive film at the other). |
| ~ roller | a cylinder that revolves. |
| n. (artifact) | 2. sprocket, sprocket wheel | thin wheel with teeth that engage with a chain. |
| ~ bicycle, bike, cycle, wheel | a wheeled vehicle that has two wheels and is moved by foot pedals. |
| ~ wheel | a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines). |
| n. (artifact) | 3. cog, sprocket | tooth on the rim of gear wheel. |
| ~ cogwheel, gear, gear wheel, geared wheel | a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion. |
| ~ tooth | something resembling the tooth of an animal. |
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