unreave

Verb

unreeve (third-person singular simple present unreeves, present participle unreeving, simple past and past participle unreeved)

1. (transitive) To withdraw or take out, as for example a rope from a block.
   • He could not only splice a broken "fall," and repair the sheaves and friction-rollers in a hoisting-block, but whenever the rigging got tangled aloft he could spring up the derrick like a cat and unreeve the rope in an instant.1896, F. Hopkinson Smith, Tom Grogan