Terms for subject Military containing loophole

English	Russian
head cover of a loophole	перекрытие бойницы
loophole that is wide at back	бойница к себе
loophole that is wide at back and front, narrow at center	бойница раструбом в обе стороны
loophole that is wide at front	бойница к противнику
mouth of a loophole	раструб бойницы
mouth of a loophole	отверстие бойницы