barmn.
英 bɑːm | 美 bɑrm
中文n. 酵母；酵母泡沫（麦芽酒发酵时表面起的）
词根词源
barm (n.)Old English beorma "yeast, leaven," also "head of a beer," from Proto-Germanic *bermon- (cognates: Dutch berm, Middle Low German barm), from PIE root *bher- (4) "to cook, bake" (cognates: Latin fermentum "substance causing fermentation," Sanskrit bhurati "moves convulsively, quivers," Middle Irish berbaim "I boil, seethe;" see brew (v.)).
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