Where does “Červenák” come from?

Červenák (Czech) comes from Czech červený, from Old Czech črvený, from Proto-Slavic čьrvenъ, from Proto-Slavic čьrvь, from Proto-Balto-Slavic kírmis, from Proto-Indo-European kʷŕ̥mis — worm.

Ancestry of “Červenák”, step by step

StepLanguageWordMeaning
1Czechčervenýred
2Old Czechčrvenýred
3Proto-Slavicčьrvenъred
4Proto-Slavicčьrvьworm, larva
5Proto-Balto-Slavickírmisworm
6Proto-Indo-Europeankʷŕ̥misworm
Every word from Proto-Indo-European kʷŕ̥mis →Every word from Proto-Balto-Slavic kírmis →Every word from Proto-Slavic čьrvь →