Wiped part of article, an editorial (7)
I believe the answer is:
cleaned
'wiped' is the definition.
(I've seen this before)
'part of article an editorial' is the wordplay.
'part of' indicates a hidden word.
'CLEANED' can be found hidden inside 'article an editorial'.
(Other definitions for cleaned that I've seen before include "Freed from dirt" , "wiped" , "Washed" , "Made free of dirt" , "Refined" .)