sea wall 
noun
A wall or embankment erected to prevent the sea 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.
- quarter-circular
- quarter cleft
- quarter clift
- quarter clock
- quarter cloth
- quarter column
- quarter-crack
- quarter cut
- quarter day
- quarterdeck
- quarterdecker
- quarter distance
- quarter-elliptic
- quarter-elliptical
- quarterer
- quarter evil
- quarter face
- quarter fee
- quarter-final
- quarter-finalist
- quarter-gallery
- quarter-galley
- quarter girth
- quarter girth measure
- quarter grain