A building where weapons and military equipment are stored.

• Often serves as a National Guard or militia facility.

A supply or collection of weapons.

• Figurative: a set of tools, techniques, or resources.

A workshop or factory where arms and armor are made.

• The manufacture of weapons and protective gear.

Heraldry; the art, system, or study of armorial bearings.

• The devices and symbols on shields and coats of arms.