Where does “gr̥bʰ-” come from?

gr̥bʰ- (Proto-Indo-European) comes from Proto-Indo-European gerbʰ-, from Proto-Indo-European ger- — to turn, bend, twist, wind; to tie, bind...

Ancestry of “gr̥bʰ-”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	gerbʰ-	to carve
2	Proto-Indo-European	ger-	to turn, bend, twist, wind; to tie, bind...

gr̥bʰ- — Etymology, Origin & Word History | Etymology Explorer