Which brings us to the definition of "arsenal." One semi-hysterical newspaper account of the Sandy Hook shooting said that Lanza had access to a "huge arsenal" of guns, and then went on to list five. According to the dictionary, "arsenal" describes a facility for the storage of military weapons, which implies hundreds, or maybe thousands. Five guns is not even a decent collection, much less an arsenal. But to the fevered brain of a civil servant, or a police official, or a reporter, any guns can constitute an arsenal, and cause the cops to come to your door, locked and loaded, and warrantless if need be.