horseradish

from WordNet (r) 3.0 (2006)

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

from The Collaborative International Dictionary of English v.0.48

Horse-radish \Horse"-rad`ish\, n. (Bot.)
   A plant of the genus {Nasturtium} ({Nasturtium Armoracia}),
   allied to scurvy grass, having a root of a pungent taste,
   much used, when grated, as a condiment and in medicine.
   --Gray.
   [1913 Webster]

   {Horse-radish tree}. (Bot.) See {Moringa}.
      [1913 Webster]

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