barm Hear it!

barm definition

barm (bärm)

noun

the yeast foam that appears on the surface of malt liquors as they ferment

Etymology: ME berme < OE beorma, yeast < IE base *bher-, to boil up > ferment, breath

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.