A purse. Frisk the skin of the stephen; empty the money out of the purse. Queer skin; an empty purse.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Skin * Skin FlintNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes