Wrongly opted for the storehouse (5)
I believe the answer is:
depot
'the storehouse' is the definition.
(synonyms)
'wrongly opted' is the wordplay.
'wrongly' indicates an anagram (I've seen this in other clues).
'opted' is an anagram of 'DEPOT'.
'for' acts as a link.
(Other definitions for depot that I've seen before include "Wherein bus drivers" , "storeroom" , "Storehouse or main bus station (5)" , "Large storage site" , "Storehouse or terminus" .)