Sentence:  He all thir Ammunition / And feats of War defeats / With plain Heroic magnitude of mind / And celeſtial vigour arm'd, / Thir Armories and <WSD>Magazins</WSD> contemns, / Renders them uſeleſs, while / With winged expedition / Swift as the lightning glance he executes / His errand on the wicked, who ſurpris'd / Loſe thir defence diſtracted and amaz'd. 
Meaning of the word marked with <WSD> tags:  An ammunition storehouse.