Pulley block

noun

Definitions

Noun
  1. 1
    A shell containing one or more sheaves, the whole forming a pulley.

    "The next stage entailed toppling-over each girder into the river by means of hand-winches and pulley-blocks."

  2. 2
    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 wordnet

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