A booby, or country lout: a name given to the New England men in North America. A general appellation for an American.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
To Yam * Yarmouth CaponNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes