1. Thin wheel with teeth that engage with a chain
   "The bicycle's sprocket wheel needed replacement after years of use";
   - sprocket wheel
    
2. Tooth on the rim of gear wheel
   "The bicycle chain slipped off the sprocket";
   - cog
    
3. Roller that has teeth on the rims to pull film or paper through
   "The film projector's sprocket engaged the perforations on the celluloid"

Derived forms: sprockets

Type of: roller, tooth, wheel

Part of: bicycle, bike, camera, cogwheel, cycle, gear, gear wheel, geared wheel, photographic camera

Encyclopedia: Sprocket