Where does “плосък червей” come from?

плосък червей (Bulgarian) comes from Bulgarian че́рвей, from Proto-Slavic čьrvьjь, from Proto-Slavic čьrvь, from Proto-Balto-Slavic kírmis, from Proto-Indo-European kʷŕ̥mis — worm.

плосък червей (Bulgarian): flatworm phylum

Definitions

  1. flatworm phylum

Ancestry of “плосък червей”, step by step

плосък червей traces back through two separate lines of ancestry.

via Bulgarian че́рвей

StepLanguageWordMeaning
1Bulgarianче́рвейworm bilateral [[protostome
2Proto-Slavicčьrvьjь—
3Proto-Slavicčьrvьworm, larva
4Proto-Balto-Slavickírmisworm
5Proto-Indo-Europeankʷŕ̥misworm

via Bulgarian пло́сък

StepLanguageWordMeaning
1Bulgarianпло́съкflat
2Proto-Slavicploskъflat
3Proto-Balto-Slavicplak-ska-—
Every word from Proto-Indo-European kʷŕ̥mis →Every word from Proto-Balto-Slavic kírmis →Every word from Proto-Slavic čьrvь →