ord·nance /ˈɔrdnən(t)s/
  大炮,軍械,武器
  Ord·nance n.  Heavy weapons of warfare; cannon, or great guns, mortars, and howitzers; artillery; sometimes, a general term for all weapons, ammunitiion, and appliances used in war.
     All the battlements their ordnance fire.   --Shak.
     Then you may hear afar off the awful roar of his [Rufus Choate's] rifled ordnance.   --E. Everett.
  Ordnance survey, the official survey of Great Britain and Ireland, conducted by the ordnance department.
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  ordnance
       n 1: military supplies [syn: munitions, ordnance stores]
       2: large but transportable armament [syn: artillery, heavy
          weapon, gun]