出典:Wiktionary
murder hole (複数形 murder holes)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/08 02:58 UTC 版)
A murder hole or meurtrière is a hole in the ceiling of a gateway or passageway in a fortification through which the defenders could fire, throw or pour harmful substances at attackers. The defenders were also able to rain rocks and arrows down on the attackers' heads. They allowed water to be poured onto fires started within the gate passage. Similar holes, called machicolations, were often located in the curtain walls of castles, fortified manor houses and city walls. The parapet would project over corbels so that holes would be located over the exterior face of the wall, and arrows could be shot at, rocks dropped on, or boiling water poured over, any attackers near the wall.