revetement
/ʁə.vɛ.t.mɑ̃/Definitions
1. noun
A covering or layer, especially of earth or other material, placed around a trench or other excavation to protect it from erosion or collapse.
“The archaeologists carefully removed the revetment to expose the ancient artifacts.”
2. noun
A layer of material, such as stone or brick, used to reinforce a wall or other structure.
“The revetment of the castle wall was damaged during the siege.”