[pum.per.nick.el] n [G, fr. pumpern to break wind + Nickel goblin; fr. its reputed indigestibility] (1756): a dark coarse sourdough bread made of unbolted rye flour
PUMPERNICKEL
Meaning of PUMPERNICKEL in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012