Green’s Dictionary of Slang

1. (N.Z. prison) a capsule of golden marijuana oil.

2001

D. Looser Boobslang [U. Canterbury D.Phil. thesis] 80/1: goldie n. = G sense 2.

2. (N.Z.) any impressive object.

2003

McGill Reed Dict. of N.Z. Sl. 90: goldie 1. An impressive object. Probably evolved by 1980s from nickname for a gold sovereign.

3. (Aus., also Goldy) a can or bottle of Castlemaine XXXX Gold beer.

2005		Matty’s Running Blog 12 Dec. 🌐 Perhaps more importantly, I managed to restrict the damage from the tasty (and free!!) amber fluid to just nine XXXX Golds - I think!!! Then it was off to the Bookmaker’s Club to put in an appearance at my mate Johnno’s surprise 30th Birthday Party, where again, I restricted the damage to just a few Goldies.
2009		Roar 6 Feb. 🌐 Most Queenslanders won’t drink XXXX, unless your having a few Goldies so you can drive home under the limit.
2017		Instagram:benhooky 18 Nov. 🌐 Knocking back a few Goldies after the brewery tour.
2018		GoGo Dermo 3 Jan. 🌐 After washing, cooking and tidying up, I spent the evening in the bar drinking XXXX, also called ‘Goldy’ because it comes in a gold can.

4. a glass of whisky.

2009

T. Black Gutted 144: I took up my pint, drained the last of it. I had a wee goldie waiting, I hit that too [Ibid.] 147: I [...] tipped the last of the goldie down my neck [and] the whisky burn hit my stomach.