The Collaborative International Dictionary of English v.0.48:
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
Card clothing, strips of wire-toothed card used for
covering the cylinders of carding machines.