Pulley
/pˈʊli/
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Definition
(noun) One of the simple machines; a sheave, a wheel with a grooved rim, in which a pulled rope or chain lifts an object (more useful when two or more pulleys are used together, as in a block and tackle arrangement, such that a small force moving through a greater distance can exert a larger force through a smaller distance).
Sentence Examples
The screw, the lever, the wedge, the pulley, etc. are called simple machines.
Ziri asked Yazid if he could borrow his pulley.
CEFR Practice Quiz
The mechanic used a ____ system to lift the heavy engine block out of the vehicle.