English to English

noun (n)

• a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away(noun.artifact)

  Synonym:
  bulwark, groin, groyne, jetty, mole, seawall
  

  source: wordnet30
• Any structure or contrivance, as a mole, or a wall at the mouth of a harbor, to break the force of waves, and afford protection from their violence.(noun)

  source: webster1913