seawall

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sea·wall

also sea wall  (sē′wôl′)
n.
An embankment to prevent erosion of a shoreline.

seawall

(ˈsiːˌwɔːl)
n
a wall or embankment built to prevent encroachment or erosion by the sea or to serve as a breakwater
ˈseaˌwalled adj
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.seawall - a protective structure of stone or concreteseawall - a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away
barrier - a structure or object that impedes free movement