Where does “rōbīgō” come from?

rōbīgō (Latin) comes from Latin rōbus, from Proto-Italic rouβos, from Proto-Indo-European h₁rewdʰ- — red.

Ancestry of “rōbīgō”, step by step

Step	Language	Word	Meaning
1	Latin	rōbus	—
2	Proto-Italic	rouβos	—
3	Proto-Indo-European	h₁rewdʰ-	red

rōbīgō — Etymology, Origin & Word History | Etymology Explorer