英 [ˈkrenɪˌleɪʃən] 美 [ˌkrenəlˈeɪʃn]
n. 锯齿状物；开垛口
a rampart built around the top of a castle with regular gaps for firing arrows or guns
同义词： battlement / crenelation
the action of constructing ramparts with gaps for firing guns or arrows
同义词： crenelation
开垛口
... 枪眼, 小窗, 换气孔 loophole 枪眼设备 crenelation; crenellation 开枪,放炮 let off ...