Green’s Dictionary of Slang

(Aus./N.Z.) clothing, esp. a woman’s dress, occas. a suit or suit pattern.

1914		Jackson & Hellyer Vocab. Criminal Sl. 59: mocha [...] Cloth; a suit pattern. Example: ‘I know a derrick who’ll peddle a mocha for a finif.’.
1947		P. Newton Wayleggo (1953) 149: Climbing out of bed and donning clammy, greasy shearing mocker. [Ibid.] 154: Mocker: Clothes.
1959		G. Slatter Gun in My Hand 51: Gets into his old mocker and gets stuck in.
1967		B. Crump Odd Spot of Bother 116: Why don’t you nick down to one of those places on Glass Street and get them to fit you out with some flash mocker?
1968		Kings Cross Whisper (Sydney) li 7/2: Look your best at this interview [...] however, carry a small bag with some shabby mocker in it.
1972		B. Crump ‘Fred’ in Best of Barry Crump (1974) 295: The composty smell of Scratcher’s malodorous mocker.
1976		D. Ireland Glass Canoe (1982) 57: ‘Now who’s got a good mocha on?’ he says, looking round at us. Sure enough, Danny’s gone mad for the occasion and has his grey suit on [...] ‘Danny, you’ll do’.
1983		R. Aven-Bray Ridgey-Didge Oz Jack Lang 36: Mocker Clothing.
1984		Aus. Short Stories viii. 54: Just wear ordinary mokker [AND].
1988		McGill Dict. of Kiwi Sl. 73/1: mocker – clothing [...] Possibly Romany word ‘mockodo’ or ‘mockeedo’, filthy, used ironically to mean opposite.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].