The story
- Proto-Indo-European*kap-
- Proto-Indo-European*kapyéti
- Proto-Italic*kapjō
- Latincapiō
- Latincapulum
- Portuguesecacho
- Portuguesecachola
- Portuguesecachalote
- Frenchcachalot
- English todaycachalot
Borrowed from French cachalot, from Portuguese cachalote, from cachola (“head”) + -ote.
Etymology from Wiktionary, CC BY-SA 4.0.