hippopotamus, hippo, river horse, Hippopotamus amphibius
['hognose snake, puff adder, sand viper', 'washbasin, handbasin, washbowl, lavabo, wash-hand basin', 'megalith, megalithic structure', 'European gallinule, Porphyrio porphyrio', 'terrapin', 'caldron, cauldron', 'flatworm, platyhelminth']