Green’s Dictionary of Slang

gin n.1

[Dharuk diyin, woman; also (quite coincidentally) the abbr. for Aborigine]

1. [19C+] (Aus., also black gin, ginny) a black Aborigine woman.

2. [1970s] (Aus.) any woman.

In compounds

fancy gin (n.)

[late 19C-1910s] (Aus.) an Aborigine woman who is a man’s girlfriend or mistress.

gin-banger (n.) [bang v.1 (2a)]

[1910s] (Aus.) a white man who enjoys sexual relations with Aborigine women.

gin-boy (n.)

[late 19C] (Aus.) a white man who enjoys sexual relations with Aborigine women.

gin-burglar (n.)

[1940s+] (Aus.) a white man who enjoys sexual relations with Aborigine women; thus gin-burglary n., having sex with a ‘gin’.

gin-cuddler (n.) (also gin-dozzler) [dozzler, ety. unknown; ? SE dazzle; or ? do v.1 (1a)]

[1950s–70s] (Aus.) a white man who enjoys sexual relations with Aborigine women.

gin-jockey (n.) [SE jockey, i.e. play on ride v. (1a)]

[1950s+] (Aus.) a white man who enjoys sexual relations with Aborigine women.

gin-man (n.)

[1960s] (Aus.) a white man who enjoys sexual relations with Aborigine women.

gin-masher (n.) [masher n. (2)]

[1900s] (Aus.) a white man who enjoys sexual relations with Aborigine women.

gin-shepherd (n.) [20C+] (Aus.)

1. (also gin-shepherder) a white man who enjoys sexual relations with Aborigine women; thus gin-shepherding n., searching for Aborigine women for sexual purposes.

2. a white person who attempts to prevent miscegenation between his peers and Aborigine women; thus gin-shepherding n.

gin’s piss (n.)

[1960s] (Aus.) any form of weak drink, also attrib.

gin-stealer (n.)

[1900s–20s] (Aus.) a white man who enjoys sexual relations with Aborigine women.

In phrases

gin around (v.)

[1970s+] (Aus.) to waste time.

like a gin at a christening

[1950s+] (Aus.) on one’s best behaviour, esp. when slightly nervous, socially uncomfortable.