Where does “מעך” come from?

מעך (Yiddish) comes from Polish Mech, from Proto-Slavic mъxъ, from Proto-Balto-Slavic muša, from Proto-Indo-European mews- — moss.

Ancestry of “מעך”, step by step

StepLanguageWordMeaning
1PolishMechmoss
2Proto-Slavicmъxъmoss
3Proto-Balto-Slavicmuša—
4Proto-Indo-Europeanmews-moss
Every word from Proto-Indo-European mews- →Every word from Proto-Balto-Slavic muša →Every word from Proto-Slavic mъxъ →