1. places where weapons and military equipment are stored or manufactured
2. collections of weapons or resources available for use
Usage: often used figuratively

Examples

• The military maintains several arsenals across the country.
• Ancient arsenals were heavily guarded fortifications.
• The team’s arsenals of talented players impressed the scouts.
• She had arsenals of facts ready for the debate.
• The government inspected the weapons stored in the arsenals.
• His arsenals of jokes kept everyone entertained.
• The arsenals were expanded during wartime.