parapet/ˈpærəpɪt, -pet; `pærəpɪt, -ˌpɛt/ n1 low protective wall along the edge of a balcony, bridge, roof, etc 矮护墙; 女（儿）墙.2 (in war) protective bank of earth, stones, etc along the front edge of a trench 胸墙.
牛津英汉双解词典