Wiktionary
mopping up
vb. (present participle of mop up English)
Usage examples of "mopping up".
All the Army of the Lord forces are engaged in the mopping up, and the goddamn Ecumenical Council of Leaders is useless now anyway, so who'd miss them?
Weasley fell back against her husband and watched Fleur mopping up Bill's wounds with a most curious expression upon her face.
Kinsey was mopping up the last of the water as the early evening barflies began to drift in.
Everyone looked at each other, except Hazel, who was mopping up the last traces of anything edible from her plate.