Definition of welt

welt Noun A raised mark on the body caused by a blow; a wheal or weal.
welt Noun A strip of leather set into the seam between the outsole of a shoe and the upper, through which these parts are joined by stitching or stapling.
welt Noun A strip of material or covered cord applied to a seam or garment edge to strengthen or cover it.
welt Verb To cause to have welts, to beat.
welt Verb To install welt (a welt or welts) to reinforce.