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barm

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noun \ˈbärm\

Definition of barm

  1. :  yeast formed on fermenting malt liquors



Origin and Etymology of barm

Middle English berme, from Old English beorma; akin to Middle Low German berm yeast, Latin fermentum yeast, fervēre to boil, Old Irish berbaid he boils


First Known Use: before 12th century


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