cyperus

from WordNet (r) 3.0 (2006)

Cyperus
    n 1: type genus of Cyperaceae; grasslike rhizomatous herbs;
         cosmopolitan except very cold regions [syn: {Cyperus},
         {genus Cyperus}]

from The Collaborative International Dictionary of English v.0.48

Cyperus \Cyp"e*rus\ (s?p"?-r?s), n. [NL., from Gr. ???? sedge.]
   (Bot.)
   A large genus of plants belonging to the Sedge family, and
   including the species called galingale, several bulrushes,
   and the Egyptian papyrus.
   [1913 Webster]