Radish meaning : A plant of the Brassicaceae family, Raphanus sativus or Raphanus raphanistrum subsp. sativus, having an edible root. The root of this plant used as food. Some varieties are pungent and usually eaten raw in salads, etc., while others have a milder taste and are cooked. With a distinguishing word: some other plant of the Raphanus genus or Brassicaceae family.