Storehouse for a half-made vessel (5)
I believe the answer is:
depot
'storehouse' is the definition.
('depot' can be a synonym of 'storehouse')
'a half-made vessel' is the wordplay.
'a half made' becomes 'de'.
'vessel' becomes 'pot' (pot is a kind of vessel**).
'de'+'pot'='DEPOT'
'for' acts as a link.
(Other definitions for depot that I've seen before include "Wherein bus drivers" , "Bus station or warehouse" , "Storage place" , "Storage base" , "Large storage site" .)