parbuckle

noun

1. a sling for a log, barrel, etc., made by passing a doubled rope around the object and pulling the rope ends through the loop
2. a device for raising or lowering a cylindrical object, consisting of a doubled rope, the middle of which is secured at a given height and the ends passed around the object so that it will move up and down as the ends are hauled in or payed out

Etymology: altered (infl. by buckle) < Early ModE parbunkel

transitive verb -·led, -·ling

to raise or lower by using a parbuckle