\Welt\, n. [OE. welte, probably fr. W. gwald a hem, a welt,
gwaldu to welt or to hem.]
1. That which, being sewed or otherwise fastened to an edge
   or border, serves to guard, strengthen, or adorn it; as;
   (a) A small cord covered with cloth and sewed on a seam or
       border to strengthen it; an edge of cloth folded on
       itself, usually over a cord, and sewed down.
   (b) A hem, border, or fringe. [Obs.]
   (c) In shoemaking, a narrow strip of leather around a
       shoe, between the upper leather and sole.
   (d) In steam boilers and sheet-iron work, a strip riveted
       upon the edges of plates that form a butt joint.
   (e) In carpentry, a strip of wood fastened over a flush
       seam or joint, or an angle, to strengthen it.
   (f) In machine-made stockings, a strip, or flap, of which
       the heel is formed.
2. (Her.) A narrow border, as of an ordinary, but not
   extending around the ends.
{Welt joint}, a joint, as of plates, made with a welt,
   instead of by overlapping the edges. See {Weld}, n., 1
   (d) .

\Welt\, v. t. [imp. & p. p. {Welted}; p. pr. & vb. n.
{Welting}.]
To furnish with a welt; to sew or fasten a welt on; as, to
welt a boot or a shoe; to welt a sleeve.

\Welt\, v. t.
To wilt. [R.]