GOOSE, or Goose cap,
a Fool. A Taylors Goose roasted, a Red-hot smoothing Iron, to close the seams. Hot and heavy like a Taylors Goose. applied to a passionate Coxcomb.
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Entry taken from 1736 Canting Dictionary, by Nathan Bailey.
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Goose in the 1811 Vulgar Tongue
Also see examples in Canting Songs and Slang Rhymes collected by John S. Farmer (1896).