Definition of entrenchment noun from the Oxford Advanced Learner's Dictionary

     

    entrenchment

     noun
    noun
    BrE BrE//ɪnˈtrentʃmənt//
     
    ; NAmE NAmE//ɪnˈtrentʃmənt//
     
     
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  1. 1[uncountable] the fact of something being firmly established
  2. 2[countable, usually plural] a system of trenches (= long narrow holes dug in the ground by soldiers to provide defence)
See the Oxford Advanced American Dictionary entry: entrenchment