Noun
circumvallation (plural circumvallations)
- A rampart or other defensive entrenchment that entirely encircles the position being defended.
- Antonym: contravallation
1761, Laurence Sterne, The Life & Opinions of Tristram Shandy, Gentleman, volume 3, Penguin, published 2003, page 201:[...] and in a word, would intrench and fortify them round with as many circumvallations and breast-works, as my uncle Toby would a citadel.
1819, Walter Scott, Ivanhoe:The Saxon architect had exhausted his art in rendering the main keep defensible, and there was no other circumvallation than a rude barrier of palisades.
1901, Henry James, Flickerbridge:He just managed to finish her in time—the day before the date fixed for his breaking ground on a greater business still, the circumvallation of Mrs. Dunn.