Hypertext Webster Gateway: "barm"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Barm \Barm\, n. [OE. berme, AS. beorma; akin to Sw. b["a]rma, G.
b["a]rme, and prob. L. fermenium. [root]93.]
Foam rising upon beer, or other malt liquors, when
fermenting, and used as leaven in making bread and in
brewing; yeast. --Shak.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Barm \Barm\, n. [OE. bearm, berm, barm, AS. beorma; akin to E.
bear to support.]
The lap or bosom. [Obs.] --Chaucer.
From WordNet (r) 1.7 (wn)
barm
n : a commercial leavening agent containing yeast cells; used to
raise the dough in making bread and for fermenting beer
or whiskey [syn: {yeast}]
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