The gizzard of a turkey or fowl, scored, peppered, salted and broiled: it derives its appellation from being hot in the mouth.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
devil * devil’s booksNathan Bailey's 1721 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes