Source : Webster's Revised Unabridged Dictionary (1913)

Gama grass \Ga"ma grass`\ [From Gama, a cluster of the Maldive
   Islands.] (Bot.)
   A species of grass ({Tripsacum dactyloides}) tall, stout, and
   exceedingly productive; cultivated in the West Indies,
   Mexico, and the Southern States of North America as a forage
   grass; -- called also {sesame grass}.