Wipes the French containers on the outside (6)
I believe the answer is:
cleans
'wipes' is the definition.
The definition and answer can be both acts as well as being plural nouns.
Perhaps you can see a link between them that I can't see?
'the french containers on the outside' is the wordplay.
'the french' becomes 'le' ('the' in French).
'containers' becomes 'cans' (can is a kind of container).
'on the outside' indicates putting letters inside.
'le' put into 'cans' is 'CLEANS'.
Can you help me to learn more?
(Other definitions for cleans that I've seen before include "Frees from dirt" , "Valets" , "Tidies up" , "See 14" , "Washes, removes dirt" .)