noun. A simple machine consisting essentially of a wheel with a grooved rim in which a pulled rope or chain can run to change the direction of the pull and thereby lift a load.

noun. A wheel turned by or driving a belt.

To raise or hoist with a pulley.

noun. Properly, a simple machine consisting of a wheel having a grooved rim for carrying a rope or other line, and turning in a frame, which, when movable, is termed a pulley-block.

noun. A block containing several grooved wheels.

noun. A tackle or apparatus consisting of one or more pulley-blocks with a rope or ropes reeved through them for use in hoisting.

noun. In anatomy: A trochlea, or trochlear surface of an articulation.

noun. A ligamentous loop which confines or changes the direction of the tendon of a muscle passing through it: as, the digastric muscle of the chin and the superior oblique of the eye both pass through a pulley. See cuts under muscle and eye.

noun. A pulley which merely tightens the belt but takes off no power.

noun. A pulley built up of segments or sectors.

noun. A segmental pulley; a pulley made in two or more sectors for convenience in casting.

noun. 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.

noun. a pulley with a broad face for transmitting power between revolving shafts by means of a belt, or for guiding a belt.

noun. undefined

noun. See Cone pulley.

noun. one of a pair of belt pulleys, each in the shape of a truncated cone, for varying velocities.

noun. a pulley firmly attached upon a shaft.

noun. a pulley loose on a shaft, to interrupt the transmission of motion in machinery. See Fast and loose pulleys, under Fast.

noun. a belt pulley made in semicircular halves, which can be bolted together, to facilitate application to, or removal from, a shaft.

noun. Same as Block, n. 6.

noun. the upright of the window frame into which a pulley is fixed and along which the sash slides.

noun. a parting pulley.

transitive verb. To raise or lift by means of a 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).

verb. To raise or lift by means of a pulley.

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

"The double-line pull uses a snatch block (also known as a pulley block) to run the wire rope out to an anchor and then double it back to the vehicle, where the hook is attached to the frame -- not the bumper, winch, or any part of the suspension."

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