Fodder tower (4)
I believe the answer is:
silo
'fodder tower' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for silo that I've seen before include "Storage tower for oils" , "Grain store; missile site" , "Farm store; soil (anag.)" , "Storage pit, tower" , "Grain storage tower" .)