Hippopotamus

hippopotamus
    n 1: massive thick-skinned herbivorous animal living in or
         around rivers of tropical Africa [syn: {hippopotamus},
         {hippo}, {river horse}, {Hippopotamus amphibius}]
    

Hippopotamus \Hip`po*pot"a*mus\, n.; pl. E. {Hippopotamuses}, L.
   {Hippopotami}. [L., from Gr.?; "i`ppos horse + ? river. Cf.
   {Equine}.] (Zool.)
   A large, amphibious, herbivorous mammal ({Hippopotamus
   amphibius}), common in the rivers of tropical Africa. It is
   allied to the hogs, and has a very thick, naked skin, a thick
   and square head, a very large muzzle, small eyes and ears,
   thick and heavy body, and short legs. It is supposed to be
   the behemoth of the Bible. Called also {zeekoe}, and {river
   horse}. A smaller species ({Hippopotamus Liberiencis})
   inhabits Western Africa.
   [1913 Webster]
    

pachyderm \pach"y*derm\ (p[a^]k"[i^]*d[~e]rm), n. [Cf. F.
   pachyderme.] (Zool.)
   Any of various nonruminant hoofed mammals having very thick
   skin, including the {elephant}, {rhinoceros}, and
   {hippopotamus}, one of the Pachydermata.
   [WordNet 1.5 + 1913 Webster]