ruggy, adj. — Green’s Dictionary of Slang

ruggy adj.

[the warmth and cosiness of being wrapped in a rug]

fusty, frowsy.

1860		Hotten Dict. of Modern Sl. etc. (2nd edn).
1864, 1867, 1870		Hotten Sl. Dict.
1873		Sl. Dict.
1898		R. Batchford Tommy Atkins of the Ramchunders 70: ‘We call him Ruggy Brown because he’s marked with smallpox’.