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- Dictionarysprocket/ˈsprɒkɪt/
noun
- 1. each of several projections on the rim of a wheel that engage with the links of a chain or with holes in film, tape, or paper.
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noun
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Toothed wheel or cog, with teeth that mesh with a chain, track or other perforated or indented material, but never meshed directly with other sprockets
A sprocket, sprocket-wheel or chainwheel is a profiled wheel with teeth that mesh with a chain, rack or other perforated or indented material. The name 'sprocket' applies generally to any wheel upon which radial projections engage a chain passing over it. It is distinguished from a gear in that sprockets are never meshed together directly, and differs from a pulley in that sprockets have teeth and... Wikipedia