A wig with the foretop combed over the eyes in a knowing style; such being much worn by the gentlemen pads, scamps, divers, and other knowing hands.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Tyburn Tippet * TykeNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes