Container for suit (4)
I believe the answer is:
case
I believe this clue is a double definition.
'container' is the first definition.
(case is a kind of container)
'suit' is the second definition.
('case' can be a synonym of 'suit')
'for' acts as a link.
(Other definitions for case that I've seen before include "Judge tries this" , "A law suit or a container" , "Trunk" , "Piece of luggage and a court proceeding" , "Overnight bag" .)