Green’s Dictionary of Slang

(Aus.) a Mediterranean immigrant .

1985		B. Humphries Traveller’s Tool 79: Ethnic minorities whether they be oil slicks, chockos or slopies.
1987		K. Lette Girls’ Night Out (1995) 126: This one’s called Petro. He’s a big choc, you know really woggy.
1999		(con. 1970s) G. Seal Lingo 104: Persons of Greek descent were called chokos, [...] gow meant wog.
2007		D. McDonald Luck in the Greater West (2008) 69: We’re lebs. Ah, except this bloke, he’s a choco [i.e. Italian].