turnip cabbage

turnip cabbage (http://definr.com/turnip cabbage)

     n 1: a cruciferous plant with a thick bulbous edible yellow root
          [syn: rutabaga, swede, Swedish turnip, {rutabaga
          plant}, Brassica napus napobrassica]
     2: fleshy turnip-shaped edible stem of the kohlrabi plant [syn:
         kohlrabi]