/kohl rah"bee, -rab"ee, kohl"rah'bee, -rab'ee/ , n. , pl. kohlrabies .
a cultivated cabbage, Brassica oleracea gongylodes, whose stem above ground swells into an edible, bulblike formation. Also called stem cabbage, turnip cabbage .
[ 1800-10; cavolrape (pl. of cavolrapa lit., stalk or cabbage turnip), with G Kohl cabbage for It cavol-. See COLE, RAPE 2 ]