supernaculum

supernaculum is an Adjective

Definition:

[1] A kind of mock Latin term intended to mean, upon the nail; -- used formerly by topers. Nares. Drinking super nagulum [supernaculum], a device of drinking, new come out of France, which is, after a man hath turned up the bottom of the cup, to drop it on his nail and make a pearl with that is left; which if it slide, and he can not make it stand on by reason there is too much, he must drink again for his penance. Nash.

[2] Good liquor, of which not enough is left to wet one`s nail. Grose.