Where does “squalo” come from?

squalo (Italian) comes from Latin squalus, from Proto-Indo-European (s)kʷálos — large fish; sheatfish.

squalo (Italian): shark

Definitions

Step	Language	Word	Meaning
1	Latin	squalus	a kind of sea fish, thought to be a shark;...
2	Proto-Indo-European	(s)kʷálos	large fish; sheatfish

squalo — Etymology, Origin & Word History | Etymology Explorer