The Collaborative International Dictionary of English v.0.48:

Eleusine \Eleusine\ n.
   a genus of annual and perennial grasses of savannas and
   upland grasslands.

   Syn: genus Eleusine.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Eleusine
    n 1: annual and perennial grasses of savannas and upland
         grasslands [syn: Eleusine, genus Eleusine]