Where does “kāre” come from?

kāre (Tocharian B) comes from Proto-Indo-European ǵʰoh₁ro- — gap, empty space.

kāre (Tocharian B): hole, pit

Definitions

Step	Language	Word	Meaning
1	Proto-Indo-European	ǵʰoh₁ro-	gap, empty space

kāre — Etymology, Origin & Word History | Etymology Explorer