Where does “barm” come from?
barm (Cimbrian) comes from Middle High German warm, from Old High German warm, from Proto-West Germanic warm, from Proto-Germanic warmaz, from Proto-Indo-European gʷʰer-, from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr.
barm (Cimbrian): warm, hot
Ancestry of “barm”, step by step