1 historical A small room in the wall of a fortress, with openings from which guns or missiles could be fired.
- He endorsed the construction of works with high stone or brick walls, the guns arranged in multilevel tiers of internal chambers called casemates, and firing done through iron-shuttered embrasures piercing the facade.
- These vaulted casemates form the main walls of the fort and support the wide gundeck, the roof of the Castillo.
- Guns usually stood on a flat terreplein, shooting over a wide earth parapet which was intended to absorb incoming fire, although they might also fire through splayed embrasures, or be housed in vaulted casemates on a lower storey.
Mid 16th century: from French, from Italian casamatta, perhaps from Greek khasma, khasmat- (see chasm).
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