Definition of mithridate mustard in English:

mithridate mustard

noun

  • 1Pepperwort, Lepidium campestre, a plant of the family Brassicaceae (Cruciferae) once credited with great medicinal virtues (now rare, perhaps obsolete).

  • 2Pennycress, Thlaspi arvense.

Origin

Late 16th century; earliest use found in John Gerard (c1545–1612), herbalist.