Storage place for oils, possibly? (4)
I believe the answer is:
silo
'storage place' is the definition.
(I've seen this in another clue)
'oils possibly?' is the wordplay.
'possibly?' indicates an anagram (I've seen 'possibly' mean this).
'oils' with letters rearranged gives 'SILO'.
'for' is the link.
(Other definitions for silo that I've seen before include "Farm store; soil (anag.)" , "Storage unit for animal feed" , "Large container for oils" , "Grain storage tower" , "Missile pit" .)