← Back to browsecoastlinenoun#17,724Translations海岸線かいがんせん沿岸部えんがんぶ海進かいしん海退かいたいEnglish definitionthe outline of a coastExamplesThe sea indented the coastline.The city has a long coastline.Similar wordscoastlinescoastcoastscoastercoastalcoasted← archaeologicalnestor →