Revetment n. (Written also revêtement) (Fort. & Engin.) A facing of wood, stone, or any other material, to sustain an embankment when it receives a slope steeper than the natural slope; also, a retaining wall.
... the centre of the terrace stood the domed fane towering some fifty cubits high and conspicuous for many miles around: its length was thirty cubits and its breadth twenty, and the red marbles of the revetment were clean polished as a mirror, so that every image was reflected in it to the life. The dome was exquisitely carved and sumptuously ornamented without; and within were ranged in due rank and sequence rows and rows of idols. To this, the Holy of Holies, from morn till eve thousands ... — Supplemental Nights, Volume 3 • Richard F. Burton