revetment
/rɪˈvetmənt/noun
1- (especially in fortification) a retaining wall or facing of masonry or other material, supporting or protecting a rampart, wall, etc（尤指加固）护墙; 砖石（或其他材料）保护层。
1.1
- a barricade of earth or sandbags set up to provide protection from blast or to prevent aircraft from overrunning when landing（防轰炸或防飞机降落时越界）挡土, 沙袋障壁。
词源
late 18th cent.: from French revêtement, from the verb revêtir （see REVET）.