barm

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun a commercial leavening agent containing yeast cells; used to raise the dough in making bread and for fermenting beer or whiskey

Etymology

From Middle English barm, barme, berm, bearm, from Old English bearm (“lap; bosom”), from Proto-West Germanic *barm, from Proto-Germanic *barmaz (“lap; bosom”), from Proto-Indo-European *bʰer- (“to bear”). Cognate with German Barm (“lap; bosom”).

In classic literature

Synonyms

yeast

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