- barm (n.)
[barm 词源字典]
- 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.)).[barm etymology, barm origin, 英语词源]