What is "to stock cards"

Stock \Stock\ (st[o^]k), v. t. [imp. & p. p. Stocked (st[o^]kt); p. pr. & vb. n. Stocking.]

1. To lay up; to put aside for future use; to store, as merchandise, and the like.

2. To provide with material requisites; to store; to fill; to supply; as, to stock a warehouse, that is, to fill it with goods; to stock a farm, that is, to supply it with cattle and tools; to stock land, that is, to occupy it with a permanent growth, especially of grass.

3. To suffer to retain milk for twenty-four hours or more previous to sale, as cows.

4. To put in the stocks. [R.]
   --Shak.

   To stock an anchor (Naut.), to fit it with a stock, or to fasten the stock firmly in place.

   To stock cards (Card Playing), to arrange cards in a certain manner for cheating purposes; -- also called to stack the deck. [Cant]

   To stock down (Agric.), to sow, as plowed land, with grass seed, in order that it may become swarded, and produce grass.

   To stock up, to extirpate; to dig up.