toothed wheel
nounUK /tuːθd wiːl/
US /tuːθd wiːl/
A wheel with teeth around its edge that turns other wheels.
The clock's toothed wheel turned the hands slowly.
RELATED WORDS
OTHER MEANINGS
2. A gear used to change speed or direction in a machine.
The engine uses a toothed wheel to drive the belt.
3. A sprocket that grips a chain.
The bicycle's toothed wheel pulled the chain around.
4. A cog in a clock or watch mechanism.
A tiny toothed wheel inside the watch clicked with each second.