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