Cachalot

King James Dictionary

Cachalot, n. A cetaceous fish, the physeter or spermaceti whale. The principal species are, the black headed with a dorsal fin, and the round-headed with a dorsal fin, and the round-headed, with out a fin on the back, and with a fistula in the snout. From this whale is obtained the spermaceti.

Webster's Dictionary

(n.) 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.