The Collaborative International Dictionary of English v.0.48:

Malabar \Mal"a*bar`\, n.
   A region in the western part of the Peninsula of India,
   between the mountains and the sea.
   [1913 Webster]

   Malabar nut (Bot.), the seed of an East Indian acanthaceous
      shrub, the Adhatoda Vasica, sometimes used medicinally.
      [1913 Webster]