rope used to keep steady any weighty body whilst it is hoisting or lowering, particularly when the ship is shaken by a tempestuous sea.

Guy is likewise a large slack rope, extending from the head of the main-mast to the head of the fore-mast, and having two or three large blocks fastened to the middle of it. This is chiefly employed to sustain the tackle used to hoist in and out the cargo of a merchant ship, and is accordingly removed from the mast-head as soon as the vessel is laden or delivered.