arrow slit

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arrow loop, loophole

arrow loop
A vertical slit for archers in medieval fortification walls, with jambs deeply splayed toward the interior.
References in periodicals archive ?
The former stable block is now a bistro area but there is still an arrowslit window where defenders of the castle would have been able to fire their bows at attackers.
This hexagonal room at the heart of the castle truly took us back in time as we banqueted on sumptuous modern dishes by candlelight next to arrowslit windows.
The castle theme of the interior is echoed to the main facade, some modest extension to the front distinctive for some battlement detailing, an arched window and a hit at an arrowslit in the gable.