From Longman Dictionary of Contemporary Englishthe stacksthe stacks[plural] the rows of shelves in a library where the books are kept → stack
Examples from the Corpus
the stacks• William looked around at the stacks of cartons and bundles and felt that he had been wasting his time tidying the stock.• I ran an experimental finger down between the stacks, being careful not to disturb the order.• Ferric could see the square bulges the stacks of money made.• As Figures 10 and 11 show, the demand for items from the stacks reached peaks at particular periods of the day.• The homunculus seems to remember where to go in the stacks.• She slept outside, on one or other of the stove pipes which projected out of the stacks on deck.• The beacons at the top of the stacks pulsed in the synthetic thunderheads. 