[1] : The Collaborative International Dictionary of English v.0.48

rana \ra"na\ r=a"n.a, n. l., a frog. zool.
   a genus of anurous batrachians, including the common frogs.
   1913 webster

[2] : WordNet (r) 2.0

rana
     n : type genus of the ranidae syn: genus rana
see also:
genus rana 

Rana >> R Words
Rana, definition of term: Rana
rana_pag1.html

Rana Pipiens >> R Words
Rana Pipiens, definition of term: Rana Pipiens
rana+pipiens_pag1.html

Rana Catesbiana >> R Words
Rana Catesbiana, definition of term: Rana Catesbiana
rana+catesbiana_pag1.html