Where does “езерце” come from?

езерце (Bulgarian) comes from Bulgarian езеро, from Old Church Slavonic ѥзеро, from Proto-Slavic ȅzero, from Proto-Balto-Slavic *éźeran — lake.

Ancestry of “езерце”, step by step

StepLanguageWordMeaning
1Bulgarianезероlake, loch, pond
2Old Church Slavonicѥзероlake
3Proto-Slavicȅzerolake
4Proto-Balto-Slavic*éźeranlake
Every word from Proto-Balto-Slavic *éźeran →Every word from Proto-Slavic ȅzero →Every word from Old Church Slavonic ѥзеро →