yeast formed on malt liquors while fermenting.

Origin of barm

before 1000; Middle English berme, Old English beorma; cognate with Frisian berme, German Bärme, Swedish bärme; akin to ferment Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for barm

Historical Examples of barm

British Dictionary definitions for barm



the yeasty froth on fermenting malt liquors
an archaic or dialect word for yeast

Word Origin for barm

Old English bearm; related to beran to bear, Old Norse barmr barm, Gothic barms, Old High German barm see ferment
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for barm

Old English beorma "yeast, leaven," also "head of a beer," from Proto-Germanic *bermon- (cf. Dutch berm, Middle Low German barm), from PIE root *bher- (4) "to cook, bake" (cf. Latin fermentum "substance causing fermentation," Sanskrit bhurati "moves convulsively, quivers," Middle Irish berbaim "I boil, seethe;" see brew (v.)).

Online Etymology Dictionary, © 2010 Douglas Harper