名詞 barm:

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

barm

n.（名詞）
The yeasty foam that rises to the surface of fermenting malt liquors.
酵母：麥芽酒發(fā)酵時，浮在其表面的發(fā)酵的泡沫

來源：
Middle English berme
中古英語 berme
from Old English beorma [yeast] * see bhreu-
源自 古英語 beorma [酵母] *參見 bhreu-