Green’s Dictionary of Slang

1. a bicycle.

1970		informant in DSAE (1996).
1976		Bike S. Afr. Oct. n.p.: When your bony is mif and dirty do you [...] get the moer in? [DSAE].

2. a motorcycle.

1983		A. Goldstuck in Frontline Oct. 58: Screaming along on a souped-up boney with your goose holding on tightly was a social statement [DSAE].
1989		C.J. Fourie Big Boys in Kani (1994) 115: It’s a boney man. A motorbike . . . a big mother.