breakwater

n wall built out into the sea to protect a coast or harbour from the force of the waves 防波堤.

break out, break out into, break sth from sth, break the ice, break through, break to sb., break up, break with sb, break-dancing, break-in, break-out, breakable, breakage, breakaway, breakdown, breaker, breakfast, breakneck, breakthrough, breakup, bream, breast, breast pocket, breast-feed, breast-high, breast-stroke, breastbone (also sternum), breastplate, breastwork, breath, breath test, breath-taking, breathalyse, breathalyser, breathe, breather, breathing, breathing-space, breathless, breathlessly,