What is a bulwark?

A bulwark is a defensive wall or barrier that is built for protection against attacks or storms. It can be made of stone, wood, metal, or other materials, and is typically used to fortify a position or structure. In a maritime context, a bulwark refers to the sides of a ship that extend above the main deck to provide protection from high waves and rough seas. A bulwark can also refer to a person or thing that serves as a strong support or defense against something difficult or challenging. Overall, a bulwark is a strong and formidable barrier that provides protection and security in various situations.