Where does “regulo” come from?

regulo (Spanish) comes from Latin Regulus, from Latin rēx, from Proto-Italic rēks, from Proto-Indo-European h₃rḗǵs, from Proto-Indo-European h₃reǵ- — to straighten, to right oneself; right; just.

Definitions

Ancestry of “regulo”, step by step

StepLanguageWordMeaning
1LatinRegulusThe star α Leonis in the constellation Leo
2Latinrēxking, ruler
3Proto-Italicrēksking
4Proto-Indo-Europeanh₃rḗǵsking, ruler
5Proto-Indo-Europeanh₃reǵ-to straighten, to right oneself; right; just
Every word from Proto-Indo-European h₃reǵ-