/ahr"seuh nl, ahrs"neuhl/ , n.
1. a place of storage or a magazine containing arms and military equipment for land or naval service.
2. a government establishment where military equipment or munitions are manufactured.
3. a collection or supply of weapons or munitions.
4. a collection or supply of anything; store: He came to the meeting with an impressive arsenal of new research data.
[ 1500-10; ( arzanale arzanà dockyard dar sina'ah workshop (lit., house of handwork); initial d prob. taken as a form of the prep. di from ]