Where does “Роуч” come from?

Роуч (Russian) comes from English roach, from Middle English roche, from Old French roche, from Persian رخ, from Middle Persian lhw', from Sanskrit रथ, from Proto-Indo-Iranian Hrátʰas, from Proto-Indo-European Hrót-h₂-os — to roll; wheel; to run, roll.

Ancestry of “Роуч”, step by step

StepLanguageWordMeaning
1EnglishroachCertain members of the fish family Cyprinidae,...
2Middle Englishroche
3Old Frenchrocherock
4Persianرخrook; cheek; face
5Middle Persianlhw'rook, castle
6Sanskritरथchariot, car, especially a two-wheeled...
7Proto-Indo-IranianHrátʰaschariot
8Proto-Indo-EuropeanHrót-h₂-os
9Proto-Indo-EuropeanHret-to roll; wheel; to run, roll
Every word from Proto-Indo-European Hret-