kohlrabi: fleshy turnip-shaped edible stem of the kohlrabi plant
cruciferous vegetable: a vegetable of the mustard family: especially mustard greens; various cabbages; broccoli; cauliflower; brussels sprouts
devil's tongue: foul-smelling somewhat fleshy tropical plant of southeastern Asia cultivated for its edible corms or in the greenhouse for its large leaves and showy dark red spathe surrounding a large spadix