复数:parapets
1.(阳台,桥等的)栏杆;女儿墙
2.【军】(构筑在堑壕和掩体前方的)胸墙,胸壁
3.〈英方〉人行道
1.a low wall at the edge of something high such as a bridge or a roof
2.a low wall that protects soldiers in the place they are shooting from