stacks

Noun stacks has 2 senses

• stacks(n = noun.quantity) dozens, gobs, heaps, lashings, loads, lots, oodles, piles, rafts, scads, scores, slews, tons, wads - a large number or amount; "made lots of new friends"; "she amassed stacks of newspapers"
is a kind of large indefinite amount, large indefinite quantity

• stacks(n = noun.artifact) - storage space in a library consisting of an extensive arrangement of bookshelves where most of the books are stored;
is a part of depository library, library
is a kind of storage space