| sperm whale. |

cach·a·lot (kāsh'ə-lŏt', -lō') n. See sperm whale. [French, from Spanish or Portuguese cachalote, augmentative of cachola, big head.] |
| sperm whale n. Any of several large, toothed whales of the family Physeteridae, especially Physeter catodon or P. macrocephalus, of tropical and temperate oceans, whose massive head has a cavity containing sperm oil and spermaceti and whose long intestines often contain ambergris. Also called cachalot. |