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|Noun||1.||pulley block - 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|
block and tackle - pulley blocks with associated rope or cable
fairlead - a pulley-block used to guide a rope forming part of a ship's rigging to avoid chafing
idle pulley, idle wheel, idler pulley - a pulley on a shaft that presses against a guide belt to guide or tighten it