ocymum basilicum

from The Collaborative International Dictionary of English v.0.48
Basil \Bas"il\, n. [F. basilic, fr. L. basilicus royal, Gr.
   basiliko`s fr. basiley`s king.] (Bot.)
   The name given to several aromatic herbs of the Mint family,
   but chiefly to the common or sweet basil ({Ocymum
   basilicum}), and the bush basil, or lesser basil ({Ocymum
   minimum}), the leaves of which are used in cookery. The name
   is also given to several kinds of mountain mint
   ({Pycnanthemum}).
   [1913 Webster]

   {Basil thyme}, a name given to the fragrant herbs {Calamintha
      Acinos} and {Calamintha Nepeta}.

   {Wild basil}, a plant ({Calamintha clinopodium}) of the Mint
      family.
      [1913 Webster]
    

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