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mug up

(adverb) (Brit, slang) to study (a subject) hard, esp for an exam
Word Origin
C19: of unknown origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Slang definitions & phrases for mug up

mug up

verb phrase
  1. To have a snack (1897+ Canadian)
  2. To have a cup of coffee (WWII Navy)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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