Barm definition

bärm
The yeasty foam that rises to the surface of fermenting malt liquors.
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The yeast foam that appears on the surface of malt liquors as they ferment.
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(obsolete except in dialects) Bosom, lap.
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Foam rising upon beer, or other malt liquors, when fermenting, and used as leaven in making bread and in brewing; yeast.

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A small, flat, round individual loaf or roll of bread.
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Other Word Forms

Noun

Singular:
barm
Plural:
barms

Origin of barm

  • Middle English berme from Old English beorma yeast bhreu- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Old English beorma; related to the dialectal (Low) German Bärm ("yeast"), from Middle Low German barm, berm. The cake sense is possibly a shortened form of barmcake, which would be made with yeast as described in that sense, or possibly it is from the Irish báirín breac, a type of cake.

    From Wiktionary

  • From Old English bearm.

    From Wiktionary