Definition:
pulley
- pulleyto hoist with a pulley
- pulleyA wheel or drum fixed on a shaft and turned by a belt, used esp. to increase speed or power
- pulleyA wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights
- pulley(on a bicycle) A wheel with a toothed rim around which the chain passes