noun. 
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                    noun. 
                    A coarse Eurasian plant (Armoracia rusticana) in the mustard family, having a thick, whitish, pungent root, large basal leaves, and white flowers in a terminal panicle.
                  
                
                  
                    noun. 
                    The roots of this plant.
                  
                
                  
                    noun. 
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                    noun. 
                    A sharp condiment made from the grated roots of this plant.
                  
                
                  
                    noun. 
                    Any of various pungent condiments resembling horseradish, such as wasabi.