armoury

Concise Oxford English Dictionary © 2008 Oxford University Press:
armoury /ˈɑːməri/ (US armory)

▶noun (pl. armories)

• 1 a store or supply of arms.

  ■ US a place where weapons are manufactured.

• 2 an array of resources available for a particular purpose.

• 3 Canadian a place where militia units drill and train.

– origin ME (in the sense ‘armour’): from OFr. armoirie, armoierie, from armoier ‘to blazon’, from arme (see arms).