pulley
nounUK /ˈpʊli/
US /ˈpʊli/
A pulley is a small wheel with a rope around it that helps lift heavy things.
We used a pulley to pull the bucket up from the well.
OTHER MEANINGS
2. A wheel with a grooved rim used to change the direction of a force.
The flag is raised with a pulley at the top of the pole.
3. A machine consisting of a wheel and rope used for lifting.
The workers set up a pulley to move the stones.
4. A small wheel on a machine that guides or tightens a belt.
The engine's pulley needed a new belt.