sheeves

/ʃiːvz/
noun
  1. Plural form of sheeve; multiple wheels or pulleys with grooved rims used to hold ropes or cables.
    • The old ship's rigging used wooden sheeves that had to be replaced often.
    • All the sheeves in the crane's pulley system were lubricated regularly.
    • The block and tackle system had three sheeves to multiply the pulling force.
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