名詞 parapet:

1. a low wall along the edge of a roof or balcony
2. fortification consisting of a low wall
   同義詞：breastwork

1. A platform lining a trench or parapet wall on which soldiers may stand when firing.
   射擊踏垛排有壕溝或胸墻的平臺，士兵們站在其上射擊
2. A platform or mound of earth within a fort from which guns are fired over the parapet.
   炮墩，炮座堡壘內部的平臺或土墩，大炮可從中越過胸墻而發(fā)射
3. The teacher told his students to catch the parapet tightly.
   老師告訴他的學生緊緊抓住欄桿。
4. This parapet is white.
   這個欄桿是白色的。

par.a.pet

n.（名詞）
A low protective wall or railing along the edge of a raised structure such as a roof or balcony.
低矮擋墻：一種沿著如屋頂或陽臺而建的低矮的護墻或欄桿
An earthen or stone embankment protecting soldiers from enemy fire.See Synonyms at bulwark
胸墻：一種用泥土或石頭筑起以掩護士兵免遭敵方火力的壩欄參見 bulwark

來源：
French
法語
from Italian parapetto
源自 意大利語 parapetto
parare [to shield] * see parasol
parare [掩護，防護] *參見 parasol
petto [chest] from Latin pectus
petto [胸] 源自 拉丁語 pectus