What is a brassicaceous plant of many varieties, cultivated for its leaves, which are not formed into a compact head like the cabbage, but are loose, and are generally curled or wrinkled; kale called?

borecole — A brassicaceous plant of many varieties, cultivated for its leaves, which are not formed into a compact head like the cabbage, but are loose, and are generally curled or wrinkled; kale. (Webster's 1913.)