Source : Webster's Revised Unabridged Dictionary (1913)

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.

Source : WordNet®

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