crenellation

防御墙顶部的雉堞图案,通常为墙顶规则的矩形缺口,可从中射箭或发射武器,尤见于中世纪欧洲建筑。

A pattern along the top of a parapet (fortified wall), most often in the form of multiple, regular, rectangular spaces in the top of the wall, through which arrows or other weaponry may be shot, especially as used in medieval European architecture.

筑城垛的行为；在顶部加设一排形似中世纪城堡城墙顶部的齿状结构。

The act of crenellating; adding a top row that looks like the top of a medieval castle.

一系列类似城垛的缺口之一,如手电筒边框上的齿纹。

Any of a series of notches with fancied resemblance to such battlements, as for example around the bezel of a flashlight.