: a sheave or small wheel with a grooved rim and with or without the block in which it runs used singly with a rope or chain to change the direction and point of application of a pulling force and in various combinations to increase the applied force especially for lifting weights
2
: a pulley or pulleys with ropes to form a tackle that constitutes one of the simple machines
3
: a wheel used to transmit power by means of a band, belt, cord, rope, or chain passing over its rim
Illustration of pulley
pulley 2
Examples of pulley in a Sentence
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So why do the Big Four continue to use such an elaborate system of weights and pulleys to distribute their shows in an age when most of what people watch on TV now comes via streaming?—Josef Adalian, Vulture, 26 Sep. 2025 The cables run through pulleys on small metal brackets that slide into rails on the machine’s frame and mat.—PC Magazine, 23 Sep. 2025 In that job and the recent repair effort, workers rigged steel cables and pulleys into nearby trees to lift the 10,000-pound bridge, Doran said.—Paul Rogers, Mercury News, 19 Sep. 2025 The rescue system, often referred to as a pin kit or z-drag, is a complex arrangement of pulleys and lines that provides humans with a mechanical advantage against the force of the river.—Madison Dapcevich, Outside, 13 Sep. 2025 See All Example Sentences for pulley
Word History
Etymology
Middle English poley, pully, from Anglo-French pulie, probably ultimately from Greek polos axis, pole — more at pole
: a small wheel with a grooved rim used with a rope or chain to change the direction of a pulling force and in combination to increase the force applied for lifting
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