Loop window

Loop window

1. Loophole Any opening in a parapet or wall to allow for vision, light, or air.2. A long, narrow, vertical opening, usually widening inward, cut in a medieval wall, parapet, or fortification, for use by archers. See also: French window

loop window

loop windows A long, narrow, vertical opening, usually widening inward, cut in a medieval wall, parapet, or fortification for use by archers; an arrowloop. (See illustration p. 602.)