the yeasty froth on fermenting malt liquors - an archaic or dialect word for yeast
WordReference Random House Unabridged Dictionary of American English © 2026
barm
(bärm),USA pronunciation n.
- Wineyeast formed on malt liquors while fermenting.
- bef. 1000; Middle English berme, Old English beorma; cognate with Frisian berme, German Bärme, Swedish bärme; akin to ferment
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'barm' also found in these entries (note: many are not synonyms or translations):