Green’s Dictionary of Slang

Rum ville n.

also Rom-vile, Rome-vile, Romeville, Rome-vyle, Rum File, Rum-vile, Rum-vill, Rumville
[rum adj. (1) + SE vill, village]

1. [mid-16C–mid-19C] (UK Und.) London.

2. [mid-19C] (US Und.) New York City.