Where does “dormiō” come from?

dormiō (Latin) comes from Proto-Italic dormiō, from Proto-Indo-European drem- — to run.

Ancestry of “dormiō”, step by step

Step	Language	Word	Meaning
1	Proto-Italic	dormiō	to sleep
2	Proto-Indo-European	drem-	to run

dormiō — Etymology, Origin & Word History | Etymology Explorer