n. The state of being lame; defect or unsoundness of a limb or limbs; especially, impairment of locomotive capacity by injury or deformity: as, lameness of the hand or foot; lameness caused by a broken or a deformed leg.n. Imperfection; want of finish or completeness; defect; insufficiency; weakness: as, the lameness of a verse or a rime; the lameness of an argument or an apology.