Learn how to say Bulwark correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word bulwark:
1a defensive wall.
a person or thing that acts as a defence:
the security forces are a bulwark against the breakdown of society
2 (usually bulwarks) an extension of a ship’s sides above the level of the deck:
the ships met, their crews lining the bulwarks
late Middle English: from Middle Low German and Middle Dutch bolwerk; related to bole1 and work