/ Dictionary / Index A air stack: Meaning and Definition of Find definitions for: air' stack" Pronunciation: [key] stack (def. 13). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. air spring air station Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language