/ Dictionary / Index A air spring: Meaning and Definition of Find definitions for: air' spring" Pronunciation: [key] — Mach. Mach. a springlike support utilizing the compressibility of air confined behind a piston in a cylinder. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. air sprayer air stack Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language