Green’s Dictionary of Slang

Australian.

1919		Register (Adelaide) 17 May 4/5: We’ll teach you many an ‘Ozzie’ prank, / And keep you ‘hopping’ too.
1922		Register (Adelaide) 9 Jan. 4/4: The ‘digger’ [...] would join his comrades in what was always termed the ‘Ozzy national game’.
1981		Guardian 27 Mar. 10/5: The room started [...] drinking, fighting and throwing up again [...] ‘That was a real Ozzy bar’.
1999		Indep. on Sun. Real Life 27 June 3: But now ... behold the Ozzie god, ‘voted the sexiest man alive’.