n. Originally, a barrier formed of logs, beams, boards, hurdles, or other materials, for the obstruction of a passage or defense of a place; now, specifically, in fortification, a rampart; a mound of earth carried around a place, capable of resisting cannon-shot, and formed with bastions, curtains, etc.; a fortification.n. Nautical, a close barrier running around a ship or a part of it, above the level of the deck, and consisting of boarding nailed on the outside of the stanchions and timber-heads.n. That which protects or secures against external annoyance or injury of any kind; a screen or shelter; means of protection and safety.n. plural Pads or defenses to protect the limbs against the chafing of armor. Wright.To fortify with a bulwark or rampart; secure by a fortification; protect.