Tidy up, in a way (4)
I believe the answer is:
dust
'tidy up in a way' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for dust that I've seen before include "Clean - dirt" , "Powdered eart" , "Fine powdery material that can be blown about in the air" , "Fine dry powder" , "Tiny particles of dirt, skin flakes etc" .)