Waves crashing against a breakwater to a seaport.
A rock wall built into an ocean to catch the waves so they don't destroy homes on the shore is an example of abreakwater.
- a construction in or around a harbour designed to break the force of the sea and to provide shelter for vessels lying inside
- (nautical) a low bulkhead across the forecastle deck of a ship which diverts water breaking over the bows into the scuppers
- On beaches: a wooden or concrete barrier, usually perpendicular to the shore, intended to prevent the movement of sand along a coast.