The Collaborative International Dictionary of English v.0.48:

Wadmol \Wad"mol\, n. [Of Scand. origin; cf. Icel. va?m[=a]l a
   woollen stuff, Dan vadmel. Cf. Wad a small mass, and
   Woodmeil.]
   A coarse, hairy, woolen cloth, formerly used for garments by
   the poor, and for various other purposes. [Spelled also
   wadmal, wadmeal, wadmoll, wadmel, etc.] --Beck
   (Draper's Dict.). Sir W. Scott.
   [1913 Webster]