cachalot n. (Zoöl.) 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 spermaceti. See Sperm whale.
... The great cachalot was now directly ahead, about two hundred fathoms away, and coming down upon them with twice his ordinary speed. The surf flew in all directions about him. "His course was marked by a white foam a rod in width which he made with the continual thrashing of this tail." His huge head, ... — South American Fights and Fighters - And Other Tales of Adventure • Cyrus Townsend Brady
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