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1.
An Australian used word meaning "good afternoon" a mix of G'Day and arvo.
Hi... G'arvo... G'arvo to you to... thanks Ill try to have a good one.
by The guy who knows Australian s February 23, 2012
 
2.
meaning good afternoon in Aussie slang
4pm "Garvo mate how you going?"
by donmecha February 22, 2012