Plundering gang takes a long time pinching gear (10)
I believe the answer is:
'plundering' is the definition.
'gang takes a long time pinching gear' is the wordplay.
'gang takes' becomes 'band' (I can't justify this - if you can you should believe this answer much more).
'a long time' becomes 'age' (an age is a period of time).
'pinching' means one lot of letters goes inside another (taking inside).
'gear' becomes 'rig' (rig is a kind of gear).
'bandage' placed around 'rig' is 'BRIGANDAGE'.