Definition of mop something up also mop up in English:

mop something up (also mop up)

Complete the military conquest of an area by capturing or killing remaining enemy troops: troops mopped up the last pockets of resistance
More example sentences
  • Keating led that journey with the vision, lost touch with those he wished to serve, and Howard was there to mop it up.
  • People think that we can mop up the problem if we throw more money at it.
  • It would appear as though the military is prepared to mop up the trouble makers and those that lead them.
See parent entry: mop

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Word of the day flippant
Pronunciation: ˈflipənt
not showing a serious or respectful attitude