| n. | 1. | (Zool.) The sperm whale (Physeter macrocephalus). It has in the top of its head a large cavity, containing an oily fluid, which, after death, concretes into a whitish crystalline substance called |
| Noun | 1. | cachalot - large whale with a large cavity in the head containing spermaceti and oil; also a source of ambergris |