ar ‧ se ‧ nal /ˈɑːs ə nəl $ ˈɑːr-/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Language: Italian ; Origin: arsenale , from Arabic dar sina'ah 'house where things are made' ]
1 . a large group of weapons that someone has:
Britain’s nuclear arsenal
arsenal of
an arsenal of guns
2 . a building where weapons are stored
3 . the equipment, methods etc that someone can use to help them achieve something:
a software package that’s now part of our arsenal
arsenal of
He has a whole arsenal of cameras.