WordReference Random House Unabridged Dictionary of American English © 2024ar•vo (är′vō),USA pronunciation n. [Australian Slang.]- British Termsafternoon.
- 1930–35; af(ternoon) + -o, with voicing of -f-; ar is r-less speaker's representation of low back vowel
Collins Concise English Dictionary © HarperCollins Publishers::
arvo /ˈɑːvəʊ/ n - Austral informal afternoon