To cheat, cozen, or over-reach; also to salivate. To flux a wig; to put it up in curl, and bake it.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Flute * FlyNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes