†The process of undermining a wall or defensive work (obsolete); the process of constructing covered trenches in order to approach a besieged place…
| 单词 | θ160931 |
| 释义 | society > armed hostility > attack > action or state of siege or blockade > [noun] > approach works > construction of (1) sap1710 †The process of undermining a wall or defensive work (obsolete); the process of constructing covered trenches in order to approach a besieged place… |
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