Military equipment, especially weapons and ammunition. / Artillery.

plural of ordnance

(Britain) Originally the branch of government that produced maps for the military, now a civilian organisation that produces maps worldwide. / A similar organisation in Ireland.

(US, military, euphemistic) napalm

any of a large series of high quality, detailed maps of Great Britain produced in a variety of scales originally for military, but now for leisure or business use

plural of Ordnance Survey map

plural of ordnanceman

(military) A person responsible for storing, maintaining, and handling ordnance.