arsenal

UK: /ˈɑː^rsən^əl/ US: /ˈɑrsənəl/ ,(är′sə nl, ärs′nəl)

WordReference Random House Learner's Dictionary of American English © 2025

ar•se•nal /ˈɑrsənəl/   n. [countable]

1. Military a military establishment for producing and storing weapons, ammunition, etc.
2. Military a collection or supply of weapons:
   the nation's arsenal of nuclear weapons.
3. a supply of any useful item:
   an arsenal of colorful phrases.

WordReference Random House Unabridged Dictionary of American English © 2025

ar•se•nal  (är′sə nl, ärs′nəl), n. 

1. Military a place of storage or a magazine containing arms and military equipment for land or naval service.
2. Military a government establishment where military equipment or munitions are manufactured.
3. Military 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.

• Arabic dār ṣinā‘ah workshop (literally, house of handwork); initial d probably taken as a form of the preposition di from
• Upper Italian (Venetian) arzanà dockyard
• Italian arzanale
• Middle French)
• (1500–10

Collins Concise English Dictionary © HarperCollins Publishers::

arsenal / ˈɑːsən^əl/ noun

1. a store for arms, ammunition, and other military items
2. a workshop or factory that produces munitions
3. a store of anything regarded as weapons

Etymology: 16th Century: from Italian arsenale dockyard, from the original Venetian arsenal dockyard and naval store, from Arabic dār sī n`ah, from dār house + sī n`ah manufacture