Definition of pumpernickel noun from the Oxford Advanced Learner's Dictionary

 

pumpernickel

 noun
noun
BrE BrE//ˈpʌmpənɪkl//
 
; NAmE NAmE//ˈpʌmpərnɪkl//
 
[uncountable](from German) Carbohydrates
 
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a type of heavy dark brown bread made from rye, originally from Germany and often sold in slices See related entries: Carbohydrates Word Origin mid 18th cent.: transferred use of German Pumpernickel ‘lout, bumpkin’, of unknown ultimate origin.
See the Oxford Advanced American Dictionary entry: pumpernickel