Source : Webster's Revised Unabridged Dictionary (1913)

Dika \Di"ka\, n. [Native West African name.]
   A kind of food, made from the almondlike seeds of the
   {Irvingia Barteri}, much used by natives of the west coast of
   Africa; -- called also {dika bread}.

Source : WordNet®

dika bread
     n : somewhat astringent paste prepared by grinding and heating
         seeds of the African wild mango; a staple food of some
         African peoples