Green’s Dictionary of Slang

1. Australia.

1927		Age (Melbourne) 19 Nov. 29/3: [T]hat bloke Andrew Cobham was the one to show ’em how to fly, him and Sir Keith Ross of South Oz.
1930		Advertiser (Adelaide) 29 Nov. 11/1: And the Witanagemote did meet, and decreed taxation such as was never before in the land of Oz, so that the people were sore smitten.
1931		Chron. (Adelaide) 5 Feb. 53/3: It came to pass also in the Land of Oz that the day dawned when no manner of work was done, for the people did make holiday in memory of the foundation of Oz .
1963–74		B. Humphries Barry McKenzie [comic strip] in Complete Barry McKenzie (1988) 20: We used to have some extra grouse sing songs [...] back in Oz.
1976		Canberra Times 10 Sept. 21/4: The opening, scene-setting ‘Living in the Land of Oz’ and the following ‘I May Be Just Another Male Chauvinistic Pig to You, But I’m In the Mood’ might have some affinity for each other, but I’d prefer to think they weren’t intended to.
1985		R.G. Barrett You Wouldn’t Be Dead for Quids (1989) 137: Incredible [...] It’s just so, so Oz.
1988		B. Humphries Complete Barry McKenzie 11: Just my luck to go back to Oz when I did and cop the last draft.
1996		(con. 1964-65) B. Thorpe Sex and Thugs and Rock ’n’ Roll 200: Some of the other bands [from the UK] started to become popular in Oz.
1999		Guardian Saturday Rev. 19 June 12: It’s almost as hard to find non-Australian wine in Oz as it is to find non-French wine in France.
2000		Guardian 18 Mar. 1: Welcome to Oz, Your Maj.
2011		Private Eye 7-20 Jan. 26/3: G’day guys. Yes, I’m out in Oz.

2. attrib. use of sense 1.

1983		V. Viidikas ‘Island of Gems’ in India Ink (1984) 45: Our family is good to us, more caring than our Oz counterparts.
1992		R.G. Barrett White Shoes 227: Australian cuisine [...] Stick to good old Oz cuisine.