sprocket.

A toothed wheel whose teeth engage a chain or perforations in a belt or film.

Use it for

Words that belong together

• a chain sprocket
• sprocket teeth

On the page

The chain lifted from the sprocket when the tension failed.

A damaged sprocket tooth tore the film at every rotation.

Usage notes

Primary category: sci-fi. Forms: Singular sprocket; plural sprockets. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.