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English definition of “trench”

trench

noun     /trentʃ/
[C] a narrow hole that is dug into the ground: A workman was killed when the sides of the trench he was working in collapsed.Ditches, dams and tunnels [C usually plural] a deep hole dug by soldiers and used as a place from which they can attack the enemy while being hidden: the trenches of the First World War trench warfare → Compare foxholeDitches, dams and tunnels
(Definition of trench noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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