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



    BrE BrE//ˈbʊlwək//
    ; NAmE NAmE//ˈbʊlwɜːrk//
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  1. 1[usually singular] bulwark (against something) (formal) a person or thing that protects or defends something a bulwark against extremism At the time fascism had many supporters in the West, who saw it as a bulwark against communism.
  2. 2[countable] a wall built as a defence
  3. 3[usually plural] the part of a ship’s side that is above the level of the deck
  4. Word Originlate Middle English: from Middle Low German and Middle Dutch bolwerk; related to bole and work.
See the Oxford Advanced American Dictionary entry: bulwark