Where does “рубрицирати” come from?

рубрицирати (Serbo-Croatian) comes from Serbo-Croatian ру̀брика, from Latin rubrīca, from Latin ruber, from Proto-Italic ruðros, from Proto-Indo-European h₁rudʰrós, from Proto-Indo-European h₁rewdʰ- — red.

Definitions

Ancestry of “рубрицирати”, step by step

Step	Language	Word	Meaning
1	Serbo-Croatian	ру̀брика	—
2	Latin	rubrīca	—
3	Latin	ruber	red ; ruddy
4	Proto-Italic	ruðros	red
5	Proto-Indo-European	h₁rudʰrós	red
6	Proto-Indo-European	h₁rewdʰ-	red

Every word from Proto-Indo-European h₁rewdʰ- →

рубрицирати — Etymology, Origin & Word History | Etymology Explorer