Noun gramma has 1 sense
  1. grama, grama grass, gramma, gramma grass - pasture grass of plains of South America and western North America
    --1 is a kind of grass
    --1 is a member of Bouteloua, genus Bouteloua
    --1 has particulars:
     blue grama, Bouteloua gracilis; black grama, Bouteloua eriopoda
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