Where does “heimrinos” come from?

heimrinos (Proto-Italic) comes from Proto-Indo-European ǵʰey-m-r-ino-s, from Proto-Indo-European ǵʰey- — winter.

Ancestry of “heimrinos”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	ǵʰey-m-r-ino-s	—
2	Proto-Indo-European	ǵʰey-	winter

heimrinos — Etymology, Origin & Word History | Etymology Explorer