Definition from Merriam-Webster:
1. noun
- a large usually conical pile (as of hay, straw, or grain)
- an orderly pile of objects usually one on top of the other
- a vertical pipe (as for carrying off smoke or vapor)
- a rack with shelves for storing books
- the part of a library in which books are stored in racks
- three or more rifles arranged together to stand in the form of a pyramid
2. verb
- to arrange in or form a stack :