Where does “мѣшькъ” come from?

мѣшькъ (Old East Slavic) comes from Proto-Slavic *měšьkъ, from Proto-Balto-Slavic maišás, from Proto-Indo-European moysós — ram, sheep; fleece, skin.

Ancestry of “мѣшькъ”, step by step

StepLanguageWordMeaning
1Proto-Slavic*měšьkъlittle bag
2Proto-Balto-Slavicmaišásbag, sack
3Proto-Indo-Europeanmoysósram, sheep; fleece, skin
Every word from Proto-Indo-European moysós →Every word from Proto-Balto-Slavic maišás →Every word from Proto-Slavic *měšьkъ →
мѣшькъ — Etymology, Origin & Word History | Etymology Explorer