Mothballs, feature of a wardrobe? (7)
I believe the answer is:
shelves
I believe this clue is a double definition.
'mothballs' is the first definition.
(both can mean to cancel or postpone something)
'feature of a wardrobe?' is the second definition.
(Other definitions for shelves that I've seen before include "Storage surfaces" , "Postpones" , "Horizontal surfaces" .)