Source : Webster's Revised Unabridged Dictionary (1913)

Card \Card\, n. [F. carde teasel, the head of a thistle, card,
   from L. carduus, cardus, thistle, fr. carere to card.]
   1. An instrument for disentangling and arranging the fibers
      of cotton, wool, flax, etc.; or for cleaning and smoothing
      the hair of animals; -- usually consisting of bent wire
      teeth set closely in rows in a thick piece of leather
      fastened to a back.

   2. A roll or sliver of fiber (as of wool) delivered from a
      carding machine.

   {Card clothing}, strips of wire-toothed card used for
      covering the cylinders of carding machines.