Nautical, Transport To haul up; usually, to haul the slack of (a rope) through its leading block, or to haul up (a tackle which hangs loose) by its fall.
Moncrieff rounded in the slack of the rope and landed the captain most beautifully.1891, William Gordon Stables, Our Home in the Silver West:
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US, Dated To round up (cattle) by riding around them.