Definition of "arsenal"

arsenal

/ˈɑː(ɹ)sənəl/

noun
plural arsenals
1. A military establishment for the storing, development, manufacturing, testing, or repairing of arms, ammunition, and other war materiel; an armoury.
2. A stock of weapons, especially all the weapons that a nation possesses.
3. A store or supply of anything.
  Quotations
  Foremost in her arsenal is that smile – so enormous and so absurdly disarming that someone should have worked out a way to harness its power into international conflict resolution.
  2014 January 21, Hermione Hoby, “Julia Roberts interview for August: Osage County – 'I might actually go to hell for this ...': Julia Roberts reveals why her violent, Oscar-nominated performance in August: Osage County made her feel 'like a terrible person' ”, in The Daily Telegraph (Review)‎
4. Any supply of aid collected to prepare a person or army for hardship
  Quotations
  Elyse Saugstad, a professional skier, wore a backpack equipped with an air bag, a relatively new and expensive part of the arsenal that backcountry users increasingly carry to ease their minds and increase survival odds in case of an avalanche.
  2012, John Branch, “Snow Fall : The Avalanche at Tunnel Creek”, in New York Time‎