Latin word culmen comes from Proto-Indo-European *kelH-

Detailed word origin of culmen

Dictionary entry	Language	Definition
*kelH-	Proto-Indo-European (ine-pro)
*kolamen	Proto-Italic (itc-pro)
culmen	Latin (lat)	(figuratively) height, acme. Stalk. Top, roof, summit.

Words with the same origin as culmen