contravallation
Noun
Meaning
A trench guarded with a parapet, constructed by besiegers, to secure themselves and check sallies of the besieged.
Source: Webster's dictionarySynonyms
palisade
bank
rampart
scarp
dike
barrier
fence
mound
fortification
barricade
stockade
bulwark
parapet
battlement
escarp
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