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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
/ ˈpʊlɪ /
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
/ pl′ē /
- 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
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Other Words From
- pulley·less adjective
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Word History and Origins
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Word History and Origins
Origin of pulley1
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Example Sentences
So we had to have a pulley system where he was lowered on cables.
Bullock died while attempting to fix one of the presses in 1867: After it became stuck, he tried to kick a belt onto a pulley.
But she bought a small pulley as well as the ground connections which Mr. Brill had in stock.
The aeroplane had been hoisted to its elevated position by means of a stout rope passing through a pulley at the top of the pole.
Shattered as were the bows of the wreck, he had succeeded in saving the two cat-heads with their three pulley-blocks.
The gap between the sawed portions permits a pulley to be fastened on the shaft to serve as the main drive.
The motor is lined up on the base, so that its pulley wheel will run a belt on the large wheel of the roller.
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