The Collaborative International Dictionary of English v.0.48:

Stack \Stack\ (st[a^]k), n. [Icel. stakkr; akin to Sw. stack,
   Dan. stak. Cf. Stake.]
   1. A large and to some degree orderly pile of hay, grain,
      straw, or the like, usually of a nearly conical form, but
      sometimes rectangular or oblong, contracted at the top to
      a point or ridge, and sometimes covered with thatch.
      [1913 Webster]

            But corn was housed, and beans were in the stack.
                                                  --Cowper.
      [1913 Webster]

   2. Hence: An orderly pile of any type of object, indefinite
      in quantity; -- used especially of piles of wood. A stack
      is usually more orderly than a pile
      [1913 Webster +PJC]

            Against every pillar was a stack of billets above a
            man's height.                         --Bacon.
      [1913 Webster]

   3. Specifically: A pile of wood containing 108 cubic feet.
      [Eng.]
      [1913 Webster]

   4. Hence: A large quantity; as, a stack of cash. [Informal]
      [PJC]

   5. (Arch.)
      (a) A number of flues embodied in one structure, rising
          above the roof. Hence:
      (b) Any single insulated and prominent structure, or
          upright pipe, which affords a conduit for smoke; as,
          the brick smokestack of a factory; the smokestack of a
          steam vessel.
          [1913 Webster]

   6. (Computer programming)
      (a) A section of memory in a computer used for temporary
          storage of data, in which the last datum stored is the
          first retrieved.
      (b) A data structure within random-access memory used to
          simulate a hardware stack; as, a push-down stack.
          [PJC]

   7. pl. The section of a library containing shelves which hold
      books less frequently requested.
      [PJC]

   Stack of arms (Mil.), a number of muskets or rifles set up
      together, with the bayonets crossing one another, forming
      a sort of conical self-supporting pile.

   to blow one's stacks to become very angry and lose one's
      self-control, and especially to display one's fury by
      shouting.
      [1913 Webster +PJC]