Where does “hiverner” come from?

hiverner (French) comes from Latin hībernāre, from Latin hībernus, from Proto-Indo-European ǵʰey- — winter.

hiverner (French): to winter, hibernate

Definitions

Step	Language	Word	Meaning
1	Latin	hībernāre	—
2	Latin	hībernus	—
3	Proto-Indo-European	ǵʰey-	winter

hiverner — Etymology, Origin & Word History | Etymology Explorer