Dust or vacuum (5)
I believe the answer is:
clean
I believe this is a double definition.
'dust' is the first definition.
(I know that dust has the is a more specific form of the action clean)
'vacuum' is the second definition.
(I know that vacuum has the is a more specific form of the action clean)
(Other definitions for clean that I've seen before include "Squeaky?" , "Pure; well-defined" , "Remove dirt or stain" , "Honest" , "not spotted" .)