horse radish

(noun) coarse Eurasian plant cultivated for its thick white pungent root. Synonyms: horseradish, horse radish, red cole, Armoracia rusticana.

(noun) the root of the horseradish plant; it is grated or ground and used for seasoning. Synonyms: horseradish, horseradish root.

(noun) grated horseradish root. Synonyms: horseradish.