intransitive. To dig a sap or covered trench; to approach a besieged place by means of a sap. Also to sap up, on.
| 单词 | θ160947 |
| 释义 | society > armed hostility > attack > action or state of siege or blockade > lay siege [verb (intransitive)] > dig approach trench or tunnel (2) sap1598 intransitive. To dig a sap or covered trench; to approach a besieged place by means of a sap. Also to sap up, on. gallery1807 Military. To make an underground passage. |
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