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A beer of Belgian origin made from malted barley and unmalted wheat that is fermented by naturally occurring airborne yeast and often flavored with fruit.
[Belgian French, from Dutch lambiek, lambik, perhaps from alteration of Lembeek, name of a village near Brussels, Belgium, or from alteration of Dutch (bier) alambiek, (beer from an) alembic (perhaps in reference to the alembiclike shape of the brewing vat), translation of French bière alambic : bière, beer + alambic, alembic (from Old French; see alembic).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a. a type of Belgian beer brewed with raw wheat and wild yeast in wooden casks, and fermented for at least a year
b. (as modifier): Lambic beers.
[C20: probably from Lembeek a town near Brussels]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014