pulley

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pul·ley / ˈpoŏlē/ • n. (pl. -leys) (also pulley wheel) a 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. Compare with block n. 7. ∎  (on a bicycle) a wheel with a toothed rim around which the chain passes. ∎  a wheel or drum fixed on a shaft and turned by a belt, used esp. to increase speed or power.• v. (-leys, -leyed) [tr.] hoist with a pulley.

pulley

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