trench or entrenchment dug by soldiers for protection or movement during combat; dugout

a protective ditch or entrenchment used for military defense

military trench or entrenchment dug around a position for protection and defense

Military trench used for communication and movement between different positions on a battlefield; also called [[交通沟|交通溝|jiao1 tong1 gou1]]

the ditch or defensive waterway outside a city wall; the moat of a city

trench warfare in military contexts

dugout or trench built to provide protection from enemy air raids; can be used for shelter or as a tactical position

military trench or defensive ditch used for combat

ditch or defensive trench

to dig a trench; to dig in