A wall or embankment erected to prevent the sea from encroaching on or eroding an area of land.
- A spokesman for the agency said that the sea wall protects a large area of low-lying land against the risk of flooding.
- To prevent future floods a sea wall was constructed and the level of the city elevated.
- Nowadays, though, the sea wall that was erected to keep the waves at bay is itself falling into the water.
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