Usually called a silo.
A grain store is defined as a store where most agricultural products are stored especially grains. A grain store will have food reserves in great quantity.
A grain storage building is called a silo, a grain bin, or a hopper.
a silo
a silo
Stark
a silo or a bin as in grain bin, or even a hopper
A barn A grain silo a grain store
a silo
Grain is usually stored in a silo, a tall tower or pit, usually on a farm or property.
During the dry season there would be little to eat if people did not store grain.
a place to store grain
Granary (n)which means a storehouse for threshed grain or animal feed