/ Dictionary / Index A air dam: Meaning and Definition of Find definitions for: air' dam" Pronunciation: [key] — Auto. Auto. a spoiler mounted at the front of an automobile to reduce air flow on the underside of the chassis to increase stability. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. air cylinder airdate 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