Source : WordNet®

horseradish
     n 1: the root of the horseradish plant; it is grated or ground
          and used for seasoning [syn: {horseradish root}]
     2: coarse Eurasian plant cultivated for its thick white pungent
        root [syn: {horse radish}, {red cole}, {Armoracia
        rusticana}]
     3: grated horseradish root