Where does “pobeliti” come from?

pobeliti (Serbo-Croatian) comes from Serbo-Croatian po, from Serbo-Croatian pol, from Ancient Greek πόλος, from Proto-Indo-European kʷel- — to turn.

Ancestry of “pobeliti”, step by step

Step	Language	Word	Meaning
1	Serbo-Croatian	po	half; for; over, through, across, in, on
2	Serbo-Croatian	pol	pole; sex; gender
3	Ancient Greek	πόλος	pivot, hinge, axis, pole; axis of the celestial...
4	Proto-Indo-European	kʷel-	to turn