/ Dictionary / Index A air valve: Meaning and Definition of Find definitions for: air' valve" Pronunciation: [key] a device for controlling the flow of air, as from a pipe or tank. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. air twist air varié Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language