Some ammonia found in military stores (4)
I believe the answer is:
ammo
This clue could be a double definition.
'some ammonia' is the first definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'military stores' is the second definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'found in' acts as a link.
Can you help me to learn more?
(Other definitions for ammo that I've seen before include "explosives, perhaps" , "essential supplies for soldiers" , "Bullets, say, in short" , "Explosive devices" , "Bullets, shells, etc. (abbr.)" .)