n. 城垛, 雉堞墙

[ noun ]
a rampart built around the top of a castle with regular gaps for firing arrows or guns
<noun.artifact>

Battlement \Bat"tle*ment\ (-ment), n. [OE. batelment; cf. OF.
bataillement combat, fr. batailler, also OF. bastillier,
bateillier, to fortify. Cf. {Battle}, n., {Bastile},
{Bastion}.] (Arch.)
(a) One of the solid upright parts of a parapet in ancient
fortifications.
(b) pl. The whole parapet, consisting of alternate solids and
open spaces. At first purely a military feature,
afterwards copied on a smaller scale with decorative
features, as for churches.