in fortifications. In “permanent fortification” the sides of
ditches supported by walls of masonry are so called. (See Counterforts.)
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
More on Revetments from Fact Monster:
- levee - levee levee [Fr.,=raised], embankment built along a river to prevent flooding by high water. Levees ...