Military. In a siege: a trench (usually one of three) that lies alongside and equidistant to the face of the fortification under siege, providing…
| 单词 | θ160934 |
| 释义 | society > armed hostility > attack > action or state of siege or blockade > [noun] > approach works > types of approach works (7) parallel1591 Military. In a siege: a trench (usually one of three) that lies alongside and equidistant to the face of the fortification under siege, providing… sap1642 A covered trench made for the purpose of approaching a besieged place under the fire of the garrison. flying sap: see flying sap at flying, adj. 4d. demi-sap1706 A sap, n.3, or trench of approach, with a single parapet. zigzag1733 Applied spec. to other things of a zigzag shape. Fortification. A trench leading towards a besieged place, constructed in a zigzag direction so as… Subcategories:— branch of (2) — construction of (1) |
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