American English

Definition of bulwark noun from the Oxford Advanced American Dictionary



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  1. 1bulwark (against something) (formal) a person or thing that protects or defends something a bulwark against extremism
  2. 2a wall built as a defense
  3. 3[usually plural] the part of a ship's side that is above the level of the deck
See the Oxford Advanced Learner's Dictionary entry: bulwark