Where does “Tskhinvali” come from?

Tskhinvali (Portuguese) comes from Georgian ცხინვალი, from Old Georgian krtskhinvali, from Old Georgian krtskhilvani.

Ancestry of “Tskhinvali”, step by step

Step	Language	Word	Meaning
1	Georgian	ცხინვალი	—
2	Old Georgian	krtskhinvali	land of hornbeams
3	Old Georgian	krtskhilvani	—

Tskhinvali — Etymology, Origin & Word History | Etymology Explorer