Where does “Slivka” come from?

Slivka (English) comes from Slovak Slivka, from Proto-Slavic sliva, from Proto-Balto-Slavic *slīˀwā́ˀ, from Proto-Indo-European (s)leh₃y- — blueish.

Ancestry of “Slivka”, step by step

Step	Language	Word	Meaning
1	Slovak	Slivka	—
2	Proto-Slavic	sliva	plum; plum tree
3	Proto-Balto-Slavic	*slīˀwā́ˀ	—
4	Proto-Indo-European	(s)leh₃y-	blueish

Slivka — Etymology, Origin & Word History | Etymology Explorer