an unsteady uneven gait

stumble and nearly fall, break down, literally or metaphorically, fail utterly; collapse, intransitive To fail; to miscarry, To fall; to stumble and go lame, as a horse, transitive To cause internal inflammation and soreness in the feet or limbs of (a horse), so as to disable or lame him, noun_ a kind of sand suitable for purposes of molding, One who founds; one who casts metals in various forms; a caster