Source : Webster's Revised Unabridged Dictionary (1913)

Ornithorhynchus \Or`ni*tho*rhyn"chus\, n. [NL., fr. Gr. ?, ?, a
   bird + ? snout, beak.] (Zo["o]l.)
   See {Duck mole}, under {Duck}.

Source : WordNet®

Ornithorhynchus
     n : type genus of the family Ornithorhynchidae [syn: {genus
         Ornithorhynchus}]