beurre blanc[bʉr′blän′, -bläŋk′; Fr bër blän′]
beurre blanc definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a creamy sauce, especially for fish and seafood, made with butter, shallots, and lemon juice or vinegar
Origin: French ; from beurre (; from Classical Latin butyrum, butter) plush blanc, white: see blank
beurre blanc definition by American Heritage Dictionary
A sauce made with butter, shallots, and vinegar, white wine, or lemon juice.
Origin: French : beurre, butter + blanc, white, not browned.