防波堤|ぼうはていbouhatei[0]heiban (flat)

1. nounbreakwater; mole
   波なみが激はげしく防波堤ぼうはていにぶつかった。↗

   The waves dashed against the seawall.

• Synonym波除けなみよけNeutralA native-Japanese word for a structure that blocks waves; less common than 「防波堤」 and focused on the wave-blocking function itself.
• Related突堤とっていNeutralA long, narrow dike reaching out to sea; the term stresses its projecting shape.
• Related防潮堤ぼうちょうていNeutralA dike built on the coast against high tides and tsunamis; 「防波堤」 is built around a harbor to block waves from the open sea.
• Related波止はとNeutralA dike stretching out into the sea, also used for sea fishing and loading and unloading cargo; the pier sense is usually 「波止場」.
• Related海壁かいへきWrittenA wall or stone embankment along the shore that blocks waves; found in written/formal prose and not common.

Use 「防波堤」 for the dike outside a harbor that blocks waves; it can also figuratively mean a protector standing in front. For tsunamis and high tides say 「防潮堤」; for structures jutting into the sea, 「突堤」 or 「波止」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 外海そとめからの波浪はろうを防ふせぐために港湾こうわんに設置せっちされる堤防ていぼう。