Sprocket (noun)

A cog-wheeled device that engages a chain or track.

Origin:

The word 'sprocket' originated in the late 15th century and is derived from the old french 'esproquet' meaning 'little spur'. the word evolved over time to be sprocket and it has been used to describe a cog-wheeled device that engages a chain or track.

Examples:

1. The sprocket helps the chain to rotate and moves the bike forward.
2. The timing belt is turned by a sprocket on the crankshaft.
3. The sprocket on the bike was rusty and needed to be replaced.
4. The sprocket and chain system are used to transfer power from the engine to the wheels.
5. The sprocket has teeth that mesh with the chain and help to rotate it.