pepperwort /ˈpɛpəwəːt/ noun2 •Any of several species of perennial plant in the genus Lepidium (originally specifically dittander, species Lepidium latifolium), which is a member of the mustard and cabbage family.Our common Pepperwort sends forth somewhat long and broad leaves, of a light bluish-green colour, finely dented about the edges and pointed at the ends […] — 1653 •Any of various species of plant in the genus Marsilea, especially Marsilea minuta. formspepperworts