Source : Webster's Revised Unabridged Dictionary (1913)

Water chevrotain \Wa"ter chev`ro*tain"\ (Zo["o]l.)
   A large West African chevrotain ({Hy[ae]moschus aquaticus}).
   It has a larger body and shorter legs than the other allied
   species. Called also {water deerlet}.

Source : WordNet®

water chevrotain
     n : largest chevrotain; of marshy areas of west Africa [syn: {water
         deer}, {Hyemoschus aquaticus}]