Supernaculum /(?)/

Su·per·nac·u·lum

Supernaculum

adv. & n.
  1. A kind of mock Latin term intended to mean, upon the nail; -- used formerly by topers.
    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.