Arsenal

Definition 
Merriam-Webster Online, http://m-w.com/

Main Entry: ar·se·nal

Pronunciation: 'ärs-n&l, 'är-s&n-&l
Function: noun
Etymology: Italian arsenale, ultimately from Arabic dAr sinA`ah house of manufacture

Date: 1555

  1. a : an establishment for the manufacture or storage of arms and military equipment b : a collection of weapons