[i. e. Whittington’s.] Newgate. Cant.—Five rum-padders are rubbed in the darkmans out of the whit, and are piked into the deuseaville; five highwaymen broke out of Newgate in the night, and are gone into the country.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
See also the definition in Nathan Bailey's 1736 dictionary of canting and thieving slang.
Whistling Shop * White RibbinNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes