welt

1. A ridge or lump on the skin, as caused by a blow or insect bite.
2. A strip, especially one around the edge of something (for example, in some old heraldry).
3. 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.
4. A strip of material or covered cord applied to a seam or garment edge to strengthen or cover it.
5. In steam boilers and sheet-iron work, a strip riveted upon the edges of plates that form a butt joint.
6. In carpentry, a strip of wood fastened over a flush seam or joint, or an angle, to strengthen it.
7. In machine-made stockings, a strip, or flap, of which the heel is formed.

Plural welts