| an extinct deerlike mammal of the genus Megaceros (Megaloceros), of the Pleistocene Epoch, having in the male extremely large, broad antlers. |

| Irish elk n. A large extinct European deer of the genus Megaceros of the Pliocene and Pleistocene epochs, having very large palmate antlers. |
| Main Entry: | Irish elk |
| Part of Speech: | n |
| Definition: | See Megaloceros |