Meaning & use
pulley
A wheel with a grooved rim that a rope or chain runs over to lift or move heavy loads.
See it in a sentence
The workers used a pulley system to hoist the piano to the third floor.
A simple pulley reduces the effort needed to raise a heavy bucket from a well.
A note on using this word
A pulley is one of the six classical simple machines studied in basic physics.
Words with a similar meaning
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