What is the meaning of stack?

noun

• An orderly pile.
• Often followed by `of'. ( a large number or amount or extent)
  • usage: "a batch of letters"; "a deal of trouble"; "a lot of money"; "he made a mint on the stock market"; "see the rest of the winners in our huge passel of photos"; "it must have cost plenty"; "a slew of journalists"; "a wad of money"
  • synonyms: batch, deal, flock, good deal, great deal, hatful, heap, lot, mass, mess, mickle, mint, mountain, muckle, passel, peck, pile, plenty, pot, quite a little, raft, sight, slew, spate, tidy sum, wad
• A list in which the next item to be removed is the item most recently stored (LIFO.
  • synonyms: push-down list, push-down stack
• A large tall chimney through which combustion gases and smoke can be evacuated.
  • synonyms: smokestack
• A storage device that handles data so that the next item to be retrieved is the item most recently stored (LIFO.
  • synonyms: push-down storage, push-down store

verb

• Load or cover with stacks.
  • usage: "stack a truck with boxes"
• Arrange in stacks.
  • usage: "heap firewood around the fireplace"; "stack your books up on the shelves"
  • synonyms: pile, heap
• Arrange the order of so as to increase one's winning chances.
  • usage: "stack the deck of cards"