Where does “kuh₂” come from?

kuh₂ (Proto-Indo-European) comes from Proto-Indo-European kewh₂- — to hit, to strike; to forge.

Ancestry of “kuh₂”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	kewh₂-	to hit, to strike; to forge

kuh₂ — Etymology, Origin & Word History | Etymology Explorer