Green’s Dictionary of Slang

1. (Aus./N.Z., also bikey) an ‘outlaw’ motorcyclist, e.g. a Hell’s Angel.

1967		‘Whisper All Aussie Dict.’ in Kings Cross Whisper (Sydney) xxxii 6/1: bikie: A member of a gang or a club of people interested in motor bikes.
1972		I. Moffitt U-Jack Society 109: These kids were not just scruffy bikies or rockers.
1979		S. King Dead Zone (1980) 350: If Tom Hayden can go straight [...] why can’t some bikies join the establishment?
1985		R.G. Barrett You Wouldn’t Be Dead for Quids (1989) 32: Bikie Number One [...] decided to poke shit at Norton’s tuxedo.
1991		R.G. Barrett Between the Devlin 106: ‘I thought all bikies were dirty, rotten low cunts’.
1992		K. Lette Llama Parlour 14: There were three freeway shootings, a mugging inside the Paradise Studios car park, gang warfare outside between the bikies and the Latinos.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].
2007		L. Redhead Cherry Pie [ebook] ‘I know you bikies get a bad rap about the drug dealing and the gang banging and bombing each other’s clubhouses’.
2010		L. Redhead Thrill City [ebook] Investment banker [...] Had links to bikies and organised crime.
2015		P. Doyle (con. 1969-1973) Big Whatever 22: Two bikeys with bandit moustaches.
2017		T. Spicer Good Girl Stripped Bare 5: Mum and Dad bought this tiny abode after a bomb went off near their flat in Normanby: bikies, I believe.
2021		P. Papathanasiou Stoning 97: [B]earded bikies on rumbling choppers.

2. attrib. use of sense 1.

1980		L. Mantell Murder and Chips 76: He belonged to a bikie gang.
1985		R.G. Barrett You Wouldn’t Be Dead for Quids (1989) 32: He had on fairly standard bikie gear, filthy denim jeans [etc.].
2005		M.B. ‘Chopper’ Read Chopper 4 242: I was the ace in the hole for one side in a bikie war.
2012		Sydney Morn. Herald 30 Jan. 🌐 [headline] Bikie gang member shot dead in Adelaide.
2020		D. Whish-Wilson Shore Leave 161: ‘Possible bikie gang-war erupts in Bayswater’.