Definitions for pulleyˈpʊl i

This page provides all possible meanings and translations of the word pulley

Princeton's WordNetRate this definition:(1.00 / 1 vote)

  1. pulley, pulley-block, pulley block, block(noun)

    a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope

WiktionaryRate this definition:(0.00 / 0 votes)

  1. pulley(Noun)

    One of the simple machines; a wheel with a grooved rim in which a pulled rope or chain will lift an object (more useful when two or more pulleys are used together such that a small force moving through a greater distance can exert a larger force through a smaller distance).

Webster DictionaryRate this definition:(1.00 / 1 vote)

  1. Pulley(verb)

    a wheel with a broad rim, or grooved rim, for transmitting power from, or imparting power to, the different parts of machinery, or for changing the direction of motion, by means of a belt, cord, rope, or chain

  2. Pulley

    to raise or lift by means of a pulley

  3. Origin: [F. poulie, perhaps of Teutonic origin (cf. Poll, v. t.); but cf. OE. poleine, polive, pulley, LL. polanus, and F. poulain, properly, a colt, fr. L. pullus young animal, foal (cf. Pullet, Foal). For the change of sense, cf. F. poutre beam, originally, a filly, and E. easel.]

FreebaseRate this definition:(4.00 / 1 vote)

  1. Pulley

    A pulley is a wheel on an axle that is designed to support movement of a cable or belt along its circumference. Pulleys are used in a variety of ways to lift loads, apply forces, and to transmit power. A pulley is also called a sheave or drum and may have a groove between two flanges around its circumference. The drive element of a pulley system can be a rope, cable, belt, or chain that runs over the pulley inside the groove. Hero of Alexandria identified the pulley as one of six simple machines used to lift weights. Pulleys are assembled to form a block and tackle in order to provide mechanical advantage to apply large forces. Pulleys are also assembled as part of belt and chain drives in order to transmit power from one rotating shaft to another.


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