noun
river dike; riverbank protection; revetment
Refers to structures built along rivers or coasts to prevent erosion and flooding. Often used in civil engineering and disaster prevention contexts.
この川の護岸工事は来月始まる予定です。
Construction work on the riverbank protection for this river is scheduled to start next month.
台風で護岸が一部崩れた。
Part of the revetment collapsed due to the typhoon.