/ Dictionary / Index A aud.: Meaning and Definition of Find definitions for: aud. Pronunciation: [key] audit. auditor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aucuba audacious Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language