bulwarks

Noun

• an embankment built around a space for defensive purposes
• a fencelike structure around a deck (usually plural)
• a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away
• plural of bulwark

Verb

• defend with a bulwark
• third-person singular simple present indicative of bulwark

Synonyms

breakwater, bulwark, groin, groyne, jetty, mole, rampart, seawall, wall