/ Dictionary / Index V v. aux.: Meaning and Definition of Find definitions for: v. aux. Pronunciation: [key] auxiliary verb. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: vaux (Thesaurus) Vauquelin vav Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language