The art of shoemaking. One of the gentle craft: a shoemaker: so called because once practised by St. Crispin.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Gelt * Gentleman CommonerNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes