a piece of pasteboard, or thick paper, blank or prepared for various uses; as, a playing card; a visiting card; a card of invitation; pl. a game played with cards.-a published note, containing a brief statement, explanation, request, expression of thanks, or the like; as, to put a card in the newspapers. also, a printed programme, and (fig.), an attraction or inducement; as, this will be a good card for the last day of the fair.-a paper on which the points of the compass are marked; the dial or face of the mariner's compass.-a perforated pasteboard or sheet-metal plate for warp threads, making part of the jacquard apparatus of a loom. see jacquard.-an indicator card. see under indicator.-to play at cards; to game.-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.-a roll or sliver of fiber (as of wool) delivered from a carding machine.-to comb with a card; to cleanse or disentangle by carding; as, to card wool; to card a horse.-to clean or clear, as if by using a card.-to mix or mingle, as with an inferior or weaker article.