Source : Webster's Revised Unabridged Dictionary (1913)

Cerasin \Cer"a*sin\, n. (Chem.)
   A white amorphous substance, the insoluble part of cherry
   gum; -- called also {meta-arabinic acid}.

   2. (Chem.) A gummy mucilaginous substance; -- called also
      {bassorin}, {tragacanthin}, etc.