sea wall

noun

1. a strong wall or embankment to prevent the encroachments of the sea, serve as a breakwater, etc.

sea wall

noun

1. a wall or embankment built to prevent encroachment or erosion by the sea or to serve as a breakwater

Other Word Forms

• sea-walled adjective

Word History and Origins

Origin of sea wall¹

before 1000; Middle English; Old English: cliff over the sea