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pulley
[ pool-ee ]
noun
- a wheel, with a grooved rim for carrying a line, that turns in a frame or block and serves to change the direction of or to transmit force, as when one end of the line is pulled to raise a weight at the other end: one of the simple machines.
- a combination of such wheels in a block, or of such wheels or blocks in a tackle, to increase the force applied.
- a wheel driven by or driving a belt or the like, used to deliver force to a machine, another belt, etc., at a certain speed and torque.
pulley
/ ˈʊɪ /
noun
- a wheel with a grooved rim in which a rope, chain, or belt can run in order to change the direction or point of application of a force applied to the rope, etc
- a number of such wheels pivoted in parallel in a block, used to raise heavy loads
- a wheel with a flat, convex, or grooved rim mounted on a shaft and driven by or driving a belt passing around it
pulley
- A machine consisting of a wheel over which a pulled rope or chain runs to change the direction of the pull used for lifting a load. Combinations of two or more pulleys working together reduce the force needed to lift a load.
- See also block and tackle
Other 51Թ Forms
- ܱl· adjective
51Թ History and Origins
51Թ History and Origins
Origin of pulley1
Example Sentences
He writes his great-grandfather's "technical diagrams of ramps and pulleys suggest that he was also a trained engineer who couldn't resist a project".
The bears lived in a treehouse surrounded by innovative systems of rigs and pulleys.
Prior to the police operation, most of the miners were only able to get underground through a makeshift pulley system operated by people at the surface.
As of 1:55 p.m., rescuers had removed dirt down to the trapped man’s thigh but needed to remove more before hoisting him out of the trench using a pulley system, Scott said.
The compound bow features mechanical pulleys, telescopic sights and release aids to assist accuracy.
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