Where does “dʰrogʰos” come from?

dʰrogʰos (Proto-Indo-European) comes from Proto-Indo-European dʰreǵʰ- — to drag, draw, pull; to draw, drag.

Ancestry of “dʰrogʰos”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	dʰreǵʰ-	to drag, draw, pull; to draw, drag

dʰrogʰos — Etymology, Origin & Word History | Etymology Explorer