Where does “Răcariu” come from?

Răcariu (Romanian) comes from Romanian răcar, from Romanian rac, from Proto-Slavic rakъ, from Proto-Balto-Slavic rṓˀkas, from Proto-Indo-European wreh₃kʷos — looking backwards.

Ancestry of “Răcariu”, step by step

StepLanguageWordMeaning
1Romanianrăcarperson who fishes or sells crayfish
2Romanianraccrayfish; cancer; Cancer
3Proto-Slavicrakъcrayfish
4Proto-Balto-Slavicrṓˀkas—
5Proto-Indo-Europeanwreh₃kʷoslooking backwards
Every word from Proto-Indo-European wreh₃kʷos →Every word from Proto-Balto-Slavic rṓˀkas →Every word from Proto-Slavic rakъ →