Pot cleaner (7)
I believe the answer is:
scourer
'pot cleaner' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for scourer that I've seen before include "Washing-up aid" , "one employed to wash pots?" , "A cathartic" , "Pot cleaner" , "Abrasive kitchen pad" .)