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A dark, sourish bread made from whole, coarsely ground rye.
[German, probably from dialectal, term of abuse : obsolete Pumper, breaking wind (from dialectal pumpern, to break wind, from Middle High German, to knock, frequentative of pumpen, of imitative origin) + German Nickel, goblin; see nickel.]
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.
(Cookery) a slightly sour black bread, originating in Germany, made of coarse rye flour
[C18: from German, of uncertain origin]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
pum•per•nick•el(ˈpʌm pərˌnɪk əl)
a coarse, dark, slightly sour bread made of unbolted rye.
[1750–60; < German pumper(n) to break wind + Nickel hypocoristic form of Nikolaus Nicholas (compare nickel); presumably applied to the bread from its effect on the digestive system]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
n → Pumpernickel m
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007