Where does “кайсия” come from?

кайсия (Bulgarian) comes from Ottoman Turkish قیصی, from Arabic قَيْسِي.

кайсия (Bulgarian): apricot

Definitions

Step	Language	Word	Meaning
1	Ottoman Turkish	قیصی	apricot
2	Arabic	قَيْسِي	—

кайсия — Etymology, Origin & Word History | Etymology Explorer