noun: (historical medicine) Any of various historical medicines—typically an electuary compounded with various poisons—believed to derive from Mithridates VI and to serve as a universal antidote.
noun: (figuratively, now rare) Synonym of cure.
noun: (rare, obsolete) Ellipsis of mithridate mustard.: pepperwort (L. campestre), pennycress (T. arvense), or candytuft (Iberis).