battlement

名词 battlement:

1. a rampart built around the top of a castle with regular gaps for firing arrows or guns
   同义词：crenelation, crenellation

1. The battlement is very strong.
   这个防卫墙很坚固。
2. They built a strong battlement
   他们建造了一个坚固的城垛。

bat.tle.ment

n.（名词）
A parapet built on top of a wall, with indentations for decoration or defense.Also called embattlement
城垛：建在墙顶上的护栏，凹处具装饰或防御功能也作 embattlement

来源：
Middle English batelment
中古英语 batelment
alteration influenced by batel [battle] * see battle
受 batel的影响 [战争] *参见 battle
of Old French batillement [tower, turret]
古法语 batillement的变化 [塔]
from bastille * see bastille
源自 bastille *参见 bastille

【引伸】
bat.tlement.ed