Where does “Pîrvulete” come from?

Pîrvulete (Romanian) comes from Romanian Pârvu, from Old Church Slavonic прьвъ, from Proto-Slavic pьrvъ, from Proto-Balto-Slavic pírˀwas, from Proto-Indo-European pr̥h₂wós, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “Pîrvulete”, step by step

StepLanguageWordMeaning
1RomanianPârvu—
2Old Church Slavonicпрьвъfirst
3Proto-Slavicpьrvъfirst
4Proto-Balto-Slavicpírˀwas—
5Proto-Indo-Europeanpr̥h₂wósfirst
6Proto-Indo-Europeanper-before, in front; first; to go through
7Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Indo-European pr̥h₂wós →