Search Result for "hippopotamus": 
Wordnet 3.0

NOUN (1)

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


The Collaborative International Dictionary of English v.0.48:

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]
The Collaborative International Dictionary of English v.0.48:

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]
WordNet (r) 3.0 (2006):

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