/ Dictionary / Index A arvo: Meaning and Definition of Find definitions for: ar•vo Pronunciation: (är'vō), [key] — n. Australian Slang. afternoon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ARVN ary Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language