1. [noun] (heading) A pile.
2. [noun] A large pile of hay, grain, straw, or the like, larger at the bottom than the top, sometimes covered with thatch.
3. [noun] A pile of similar objects, each directly on top of the last.
4. [noun] (UK) A pile of poles or wood, indefinite in quantity.
5. [noun] A pile of wood containing 108 cubic feet. (~3 m³)
6. [noun] A smokestack.
7. [noun] (heading) In digital computing.
8. [noun] A linear data structure in which the last data item stored is the first retrieved; a LIFO queue.
9. [noun] A portion of computer memory occupied by a stack data structure, particularly (the stack) that portion of main memory manipulated during machine language procedure call related instructions.
10. [noun] (math) A generalization of schemes in algebraic geometry and of sheaves.
11. [noun] (geology) A coastal landform, consisting of a large vertical column of rock in the sea.
12. [noun] ?(library) Compactly spaced bookshelves used to house large collections of books.
13. [noun] (figuratively) A large amount of an object.
14. [noun] (military) A pile of rifles or muskets in a cone shape.
15. [noun] (poker) The amount of money a player has on the table.
16. [noun] (heading) In architecture.
17. [noun] A number of flues embodied in one structure, rising above the roof.
18. [noun] A vertical drainpipe.
19. [noun] (Australia) (slang) A fall or crash, a prang.
20. [noun] (bodybuilding) A blend of various dietary supplements or anabolic steroids with supposed synergistic benefits.
21. [noun] (US) (slang) At Caltech, a lock, obstacle, or puzzle designed to prevent underclassmen from entering a senior's room during ditch day.
22. [verb] (transitive) To arrange in a stack, or to add to an existing stack.
23. [verb] (transitive) (card games) To arrange the cards in a deck in a particular manner.
24. [verb] (transitive) (poker) To take all the money another player currently has on the table.
25. [verb] (transitive) To deliberately distort the composition of (an assembly, committee, etc.).
26. [verb] (transitive) (US) (Australia) (slang) To crash; to fall.
27. [noun] An orderly pile.
28. [noun] (often followed by `of') a large number or amount or extent; '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'.
29. [noun] A list in which the next item to be removed is the item most recently stored (LIFO).
30. [noun] A large tall chimney through which combustion gases and smoke can be evacuated.
31. [noun] A storage device that handles data so that the next item to be retrieved is the item most recently stored (LIFO).
32. [verb] Load or cover with stacks; 'stack a truck with boxes'.
33. [verb] Arrange in stacks; 'heap firewood around the fireplace'; 'stack your books up on the shelves'.
34. [verb] Arrange the order of so as to increase one's winning chances; 'stack the deck of cards'.
