the woody thick skin quartering the kernel of a walnut; prefcribed by fome physicians, when dried and taken with white wine, as a remedy againft the gravel.

ZEST is alfo ufed for a chip of orange or lemon peel; fuch as is ufhally fqueezed into ale, wine, &c. to give it a flavour; or the fine oil which fputrs out of that peel on fqueezing it.