: a biennial garden plant (Beta vulgaris) of the amaranth family that includes several cultivars (such as Swiss chard and sugar beet) and that has thick edible leaves with long petioles and often swollen purplish-red roots                                      
                
                                
            also                
          
                                                      : its root used especially as a vegetable, as a source of sugar, or for forage                                      
            
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  Merriam-Webster unabridged




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