hippopotamus, hippo, river horse, Hippopotamus amphibius
['ram, tup', 'leatherback turtle, leatherback, leathery turtle, Dermochelys coriacea', 'bathtub, bathing tub, bath, tub', 'bathing cap, swimming cap', 'bittern', 'crayfish, crawfish, crawdad, crawdaddy', "plunger, plumber's helper"]