What is mean arsenal?

Answer 1

A public establishment for the storage, or for the manufacture and storage, of arms and all military equipments, whether for land or naval service.

Answer 2

An Arsenal is somewhere where weapons are manufactured, repaired and restoered.

The football team Arsenal was formed by employees at the British Royal Arsenal, which is in Woolwich, East London. They played under the names Royal Arsenal and then Woolwich Arsenal before moving to Highbury, North London, which is when they dropped the word Woolwich from their name.

Arsenal's nickname "the Gunners" is in reference to their history and association with the Royal Arsenal.