Meaning & use
cog
A tooth on the rim of a wheel or gear that meshes with another to transmit motion.
See it in a sentence
One of the cogs on the old clock had worn down and stopped turning smoothly.
He felt like just a small cog in the enormous machinery of the corporation.
A note on using this word
Cog is often used figuratively, as in cog in the machine, to describe a small but replaceable part of a system.
Words with a similar meaning
geartooth
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
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