Noun wool grass has 2 senses
  1. wool grass, Scirpus cyperinus - sedge of eastern North America having numerous clustered woolly spikelets
    --1 is a kind of sedge
    --1 is a member of Scirpus, genus Scirpus
  2. Ravenna grass, wool grass, Erianthus ravennae - grass often cultivated for its long white-ribbed leaves and large plumes resembling those of pampas grass
    --2 is a kind of plume grass
    --2 is a member of Erianthus, genus Erianthus
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