Source : WordNet®

Hippo
     n 1: an ancient Numidian town in northwestern Africa adjoining
          present-day Annaba in northeastern Algeria [syn: {Hippo
          Regius}]
     2: massive thick-skinned herbivorous animal living in or around
        rivers of tropical Africa [syn: {hippopotamus}, {river
        horse}, {Hippopotamus amphibius}]