The definition of a pulley is a small fixed wheel or a group of such wheels with a rope or chain in a grooved rim that is used to lift something up.
(noun)An example of a pulley is a device for raising a flag.
See pulley in Webster's New World College Dictionary
noun pl. pulleys
Origin: ME poley < OFr polie < ML poleia < poledia < MGr *polidion, dim. of polos, pivot, windlass, axis: see wheel
See pulley in American Heritage Dictionary 4
noun pl. pul·leys
Origin:
Origin: Middle English poley
Origin: , from Old French polie
Origin: and from Medieval Latin poliva
Origin: , both ultimately from Greek polos, axis; see kwel-1 in Indo-European roots
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