SUPERNACULUM,
not so much as a Drop left to be poured upon the Thumb nail, so cleverly was the Liquor tipt off.
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Entry taken from 1736 Canting Dictionary, by Nathan Bailey.
The Vulgar Tongue originally collected by Grose, 1811.
Also see examples in Canting Songs and Slang Rhymes collected by John S. Farmer (1896).