The phrase "that arsenal" is an idiomatic expression that refers to a collection or supply of weapons, resources, or tools that are available for use. It can also refer to a group or organization that has access to such resources.
Sentences with «that arsenal»
Do you know the stats of arsenal fans with high BP? (justarsenal.com)
I see him being a very longstanding and beloved player for arsenal for many years. (justarsenal.com)
He has the respect of a lot of arsenal fans and that is for sure. (justarsenal.com)