crenellation是什么意思音标:英 [krenɪ'leɪʃən]美 [krenɪ'leɪʃən]

n. 开枪眼的工事, 开枪眼的工程, 雉堞

n a rampart built around the top of a castle with regular gaps for firing arrows or guns
n the action of constructing ramparts with gaps for firing guns or arrows