DICT.TW Dictionary Taiwan

 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 Survey
      n : the official cartography agency of the British government