Storage for crude oils (4)
I believe the answer is:
silo
'storage' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'crude oils' is the wordplay.
'crude' indicates anagramming the letters.
'oils' is an anagram of 'SILO'.
'for' is the link.
Can you help me to learn more?
(Other definitions for silo that I've seen before include "Cylindrical storage tower" , "Farm grain storer" , "Tower used for storing fodder" , "Farm store; soil (anag.)" , "Where rockets are launched from" .)