Meaning of PULLEY-BLOCK

WordNet Dictionary
	Definition:		[n]  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
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	Synonyms:		block, pulley
	See Also:		block and tackle, bollock, bullock block, fairlead, idle pulley, idle wheel, idler pulley, machine, simple machine