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(Cookery) a herring fillet rolled, usually around onion slices, and pickled in spiced vinegar
[C20: from German Rollmops, from rollen to roll + Mops pug dog]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a fillet of marinated herring wrapped around a pickle.
[1910–15; < German Rollmops=roll(en) to roll + Mops pug (dog)]
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