Where does “пловућац” come from?

пловућац (Serbo-Croatian) comes from Serbo-Croatian пло̀вити, from Proto-Slavic plavati, from Proto-Slavic plàviti, from Proto-Slavic -vati.

пловућац (Serbo-Croatian): pumice

Definitions

Step	Language	Word	Meaning
1	Serbo-Croatian	пло̀вити	—
2	Proto-Slavic	plavati	to swim; to float; to sail
3	Proto-Slavic	plàviti	—
4	Proto-Slavic	-vati	—

пловућац — Etymology, Origin & Word History | Etymology Explorer