Green’s Dictionary of Slang

1. an ageing prostitute.

1977

D. Muller Whitey 108: ‘This one here’s a goffel.’ Boon jerked the blanket from the inert form [...] to reveal a dishevelled, tattered female.

2. a mixed-race person.

1990

P. Hotz Muzukuru 4: ‘The bloke’s really got it in for us. Some goffel spoilt his sister, and he’s been after us ever since.’ ‘Ya, he hates goffels,’ his buddy confirms, ‘really hates us.’ [Ibid.] 18: He wasn’t yellow-brown like most of us goffels, or brown like most houties, he was black.