Dictionary
pulley
noun pul·ley \ˈpu̇-lē\
: a wheel or set of wheels that is used with a rope, chain, etc., to lift or lower heavy objects
plural pulleys
Full Definition of PULLEY
1
: 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
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Illustration of PULLEY
Origin of PULLEY
Middle English poley, pully, from Anglo-French pulie, probably ultimately from Greek polos axis, pole — more at pole
First Known Use: 14th century
PULLEY Defined for Kids
pulley
noun pul·ley \ˈpu̇-lē\
plural pulleys
Definition of PULLEY for Kids
: a wheel over which a belt, rope, or chain is pulled to lift or lower a heavy object
Medical Dictionary
pulley
noun pul·ley \ˈpu̇l-ē\
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