2) spermaceti. The American HeritageŽ Dictionary of the English Language: Fourth Edition. 2000.
...Inflected forms: pl. sperˇmaˇceˇtis A white, waxy substance consisting of various esters of fatty acids, obtained from the head of the sperm whale or another cetacean...

3) sperm whale. The American HeritageŽ Dictionary of the English Language: Fourth Edition. 2000.
...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...