A strip, as of leather or other material, stitched into a shoe between the sole and the upper. A tape or covered cord sewn into a seam as reinforcement or trimming. A ridge or bump on the skin caused by a lash or blow or sometimes by an allergic reaction. A lash or blow producing such a mark. To reinforce or trim with a welt. To beat severely; flog. To raise welts or a welt on.