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The residue left in a still after the process of distillation.
[French, from Provençal vinassa, from Latin vīnācea, from feminine of vīnāceus; see vinaceous.]
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.
(Brewing) the residue left in a still after distilling spirits, esp brandy
[C20: from French]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014