em.bra.sure
n.（名词）An opening in a thick wall for a door or window, especially one with sides angled so that the opening is larger on the inside of the wall than on the outside.斜面洞：在门或窗的厚壁上开的一个洞，尤指有斜面角的，这样里面开的比外面开的大A flared opening for a gun in a wall or parapet.枪眼，炮眼：在墙或护墙上开的用于射击的洞口
来源：French 法语 from embraser [to widen an opening] 源自 embraser [扩大开口]
【引伸】
embra.sured
adj.（形容词）
