Source : Webster's Revised Unabridged Dictionary (1913)

Rhea \Rhe"a\, n. (Bot.)
   The ramie or grass-cloth plant. See {Grass-cloth plant},
   under {Grass}.

Rhea \Rhe"a\, n. [L., a proper name.] (Zo["o]l.)
   Any one of three species of large South American ostrichlike
   birds of the genera {Rhea} and {Pterocnemia}. Called also the
   {American ostrich}.

   Note: The common rhea, or nandou ({Rhea Americana}), ranges
         from Brazil to Patagonia. Darwin's rhea ({Pterocnemia
         Darwinii}), of Patagonia, is smaller, and has the legs
         feathered below the knee.

Source : WordNet®

Rhea
     n 1: fertility goddess in ancient Greek mythology; wife of Cronus
          and mother of Zeus; identified with Roman Ops and Cybele
          of ancient Asia Minor
     2: smaller of two tall fast-running flightless birds similar to
        ostriches but three-toed; found from Peru to Strait of
        Magellan [syn: {nandu}, {Pterocnemia pennata}]
     3: larger of two tall fast-running flightless birds similar to
        ostriches but three-toed; found from Brazil to Patagonia
        [syn: {Rhea americana}]