Definition of circumvallation in English:
A defensive wall of a castle or walled city: a small stream encircled the space between the inner and outer circumvallations
More example sentences
- This circumvallation had begun modestly enough as a yard-high rampart with stockade and ditch, but successive developments raised it to well over 30 feet.
- Edinburgh had been walled in 1450, and so narrow was the circumvallation that the Cowgate was beyond the circle of towers.
- The Athenians cut off Syracuse with two forts, and began a twin circumvallation, but left their northern walls incomplete, which proved disastrous.
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