矢や狭ざ間ま

noun

arrow-slit; loophole; crenel

A narrow vertical opening in a castle wall or fortification for shooting arrows. The term is specific to Japanese castle architecture.

• 城しろの石いし垣がきには矢や狭ざ間まがいくつも設もうけられていた。

  The castle's stone walls had many arrow-slits.