Clean up, Mrs! (3)
I believe the answer is:
mop
This could be a double definition.
'clean' is the first definition.
(mopping is a kind of cleaning)
'up mrs' is the second definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
Can you help me to learn more?
(Other definitions for mop that I've seen before include "Floor wiper" , "Implement for washing floor" , "Finish off a task - . . . up" , "Floor cleaner" , "Instrument for cleaning" .)