welt Syllabification: (welt)Pronunciation: /welt/Translate welt | into French | into Italian | into Spanish Definition of welt noun 1a leather rim sewn around the edge of a shoe upper to which the sole is attached. a ribbed, reinforced, or decorative border of a garment or pocket. 2a red, swollen mark left on flesh by a blow or pressure. a heavy blow. verb [with object] 1provide with a welt. 2strike (someone or something) hard and heavily:I could have welted her [no object] develop a raised scar:his lip was beginning to thicken and welt from the blowOrigin: late Middle English: of unknown originwelt in other Oxford dictionaries Definition of welt in the British & World English dictionary