Source : Webster's Revised Unabridged Dictionary (1913)

Burl \Burl\, v. t. [imp. & p. p. {Burled}; p. pr. & vb. n.
   {Burling}.] [OE. burle stuffing, or a knot in cloth; cf. F.
   bourlet, bourrelet, OF. bourel, a wreath or a roll of cloth,
   linen, or leather, stuffed with flocks, etc., dim. of bourre.
   [root]92. See {Bur}.]
   To dress or finish up (cloth); to pick knots, burs, loose
   threads, etc., from, as in finishing cloth.

   {Burling iron}, a peculiar kind of nippers or tweezers used
      in burling woolen cloth.

Source : WordNet®

burled
     adj : (of wood) have a pattern from the grain of a tree burl