[ bahrm ]
/ bɑrm /


yeast formed on malt liquors while fermenting.

Nearby words

  1. barley-bree,
  2. barleycorn,
  3. barlow,
  4. barlow's disease,
  5. barlow, joel,
  6. barm cake,
  7. barmaid,
  8. barman,
  9. barmbrack,
  10. barmecidal

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

British Dictionary definitions for barm


/ (bɑːm) /


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