noun (n)

• a hardy cabbage with coarse curly leaves that do not form a head(noun.plant)

  Synonym:
  brassica oleracea acephala, cole, colewort, kail, kale
  

  source: wordnet30
• 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.(noun)

  source: webster1913