| Rating | Solver | Clue |
|---|---|---|
| HIPPO | River horse | |
| SWIM | To cause or compel to swim; to make to float; as, to swim a horse across a river. | |
| HIPPOPOTAMUS | A large, amphibious, herbivorous mammal (Hippopotamus amphibius), common in the rivers of Africa. It is allied to the hogs, and has a very thic... |