ph.

1. 揩干;抹干
If you mop up a liquid, you clean it with a cloth so that the liquid is absorbed.

2. 完成;结束;肃清
If you mop up something that you think is undesirable or dangerous, you remove it or deal with it so that it is no longer a problem.

1. a concluding action

Synonym: completionculminationclosingwindup