Definition of barm:
"Late C14: And with that word this faucon gan to crie / And swowned eft in Canacees barm. -- Geoffrey Chaucer, 'The Squire's Tale', Canterbury Tales"
°Foam rising upon beer, or other malt liquors, when fermenting, and used as leaven in making bread and in brewing; yeast.
"1882: In 1577 yeast, called barm, is bought at 9d. the pail. — James Edwin Thorold Rogers, A History of Agriculture and Prices in England, Volume 4, p. 620."
Definition of barm:
"Late C14: And with that word this faucon gan to crie / And swowned eft in Canacees barm. -- Geoffrey Chaucer, 'The Squire's Tale', Canterbury Tales"
°Foam rising upon beer, or other malt liquors, when fermenting, and used as leaven in making bread and in brewing; yeast.
"1882: In 1577 yeast, called barm, is bought at 9d. the pail. — James Edwin Thorold Rogers, A History of Agriculture and Prices in England, Volume 4, p. 620."