·noun The sides of a ship above the upper deck.
II. Bulwark ·noun A rampart; a fortification; a bastion or outwork.
III. Bulwark ·noun That which secures against an enemy, or defends from attack; any means of defense or protection.
IV. Bulwark ·vt To fortify with, or as with, a rampart or wall; to secure by fortification; to Protect.