Green’s Dictionary of Slang

great adj.3

SE in slang uses

In compounds

great divide, the (n.) [pun on the Great Divide, in the Blue Mountains, or the US equivalent in the Rocky Mountains, cited in the celebrated poem ‘Eskimo Nell’]

1. [20C+] the vagina.

2. [1930s+] (Aus.) the cleavage between a woman’s breasts.

great gas (n.) (also good gas) [gas n.1 (3)]

[1910s+] (Irish) something, or someone, extremely enjoyable.

great house (n.) [the size of the building in comparison with the original homes of its inmates]

[mid-19C] the workhouse.

great joseph (n.) [ext. Joseph n. (1); the biblical Joseph’s ‘coat of many colours’]

[18C–early 19C] (UK Und.) an overcoat.

great tobacco (n.)

[20C+] (drugs) opium.

In phrases

Great White Way (n.)

see separate entry.