Where does “ostrovaș” come from?

ostrovaș (Romanian) comes from Romanian ostrov, from Proto-Slavic ostrovъ, from Proto-Indo-European strow-.

Ancestry of “ostrovaș”, step by step

StepLanguageWordMeaning
1Romanianostrovait; island
2Proto-Slavicostrovъstreamlined; river island; island
3Proto-Indo-Europeanstrow-—
Every word from Proto-Indo-European strow- →Every word from Proto-Slavic ostrovъ →Every word from Romanian ostrov →