Where does “sarmentum” come from?

sarmentum (English) comes from Latin sarmentum, from Old Latin *sarpmentom, from Latin sarpo, from Proto-Indo-European serp- — to creep, crawl.

sarmentum (English): A runner

Definitions

Step	Language	Word	Meaning
1	Latin	sarmentum	shoot; twigs, brushwood
2	Old Latin	*sarpmentom	—
3	Latin	sarpo	I prune
4	Proto-Indo-European	serp-	to creep, crawl

sarmentum — Etymology, Origin & Word History | Etymology Explorer