circumvallation
/.sә:kәmvә'leiʃәn/
📖 中文释义
- n. 围以城墙
📘 English Definition（英文释义）
- n. The act of surrounding with a wall or rampart.
- n. A line of field works made around a besieged place
- and the besieging army, to protect the camp of the besiegers against
- the attack of an enemy from without.