ETYM Spanish and French arsenal arsenal, dockyard, or Italian arzanale, arsenale; all from Arabic dâr-as-inâa house of industry or fabrication; dâr house + inâ art, industry.
1. A military structure where arms and ammunition and other military equipment are stored and training is given in the use of arms; SYN. armory, armoury.
2. All the weapons and equipment that a country has; SYN. armory, armoury.
Store or factory for weapons; repertory.