Where does “מערבֿ־ברעג” come from?

מערבֿ־ברעג (Yiddish) comes from Yiddish ברעג, from Polish brzeg, from Proto-Slavic bergъ, from Proto-Balto-Slavic *bérgas, from Proto-Indo-European *bʰérǵʰos, from Proto-Indo-European bʰerǵʰ- — to rise; high, lofty; hill, mountain.

Ancestry of “מערבֿ־ברעג”, step by step

מערבֿ־ברעג traces back through two separate lines of ancestry.

via Yiddish ברעג

StepLanguageWordMeaning
1Yiddishברעגcoast; shore; beach
2Polishbrzegcoast, shoreline, bank; the area along the edge...
3Proto-Slavicbergъhill; slope, cliff?; bank, shore?, coast?
4Proto-Balto-Slavic*bérgashill
5Proto-Indo-European*bʰérǵʰoshill
6Proto-Indo-Europeanbʰerǵʰ-to rise; high, lofty; hill, mountain

via Yiddish מערבֿ

StepLanguageWordMeaning
1Yiddishמערבֿwest
2Hebrewמַעֲרָבwest; occident, west
Every word from Proto-Indo-European bʰerǵʰ-Every word from Proto-Indo-European *bʰérǵʰosEvery word from Proto-Balto-Slavic *bérgas