Where does “Nilo” come from?

Nilo (Portuguese) comes from Latin Nilus, from Ancient Greek Νεῖλος, from Ancient Greek νεῖλος, from Arabic نِيل, from Persian نیل, from Arabic نيل, from Middle Persian 𐭭𐭩𐭫, from Sanskrit नील — to lead.

Ancestry of “Nilo”, step by step

StepLanguageWordMeaning
1LatinNilusthe Nile
2Ancient GreekΝεῖλος
3Ancient Greekνεῖλοςriver valley
4Arabicنِيلindigo
5Persianنیلindigo
6Arabicنيلverbal noun of نَالَ; indigo; to colour indigo
7Middle Persian𐭭𐭩𐭫indigo
8Sanskritनीलof a dark color
9Proto-Indo-EuropeanneyH-to lead
Every word from Proto-Indo-European neyH-Every word from Sanskrit नीलEvery word from Middle Persian 𐭭𐭩𐭫