stagger
noun
°An unsteady movement of the body in walking or standing, as if one were about to fall; a reeling motion; vertigo; -- often in the plural; as, the stagger of a drunken man.
°A disease of horses and other animals, attended by reeling, unsteady gait or sudden falling; as, parasitic staggers; apoplectic or sleepy staggers.
verb
°In standing or walking, to sway from one side to the other as if about to fall; to stand or walk unsteadily; to reel or totter.
°To cause to reel or totter.