/ Dictionary / Index A air cushion: Meaning and Definition of Find definitions for: air' cush"ion Pronunciation: [key] an inflatable, airtight cushion. See(def. 2). an air bag. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. air curtain air cushion vehicle Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language