noun
tide embankment; seawall
A coastal barrier built to protect against high tides, storm surges, and tsunamis. Common in civil engineering and disaster prevention contexts.
この町は防潮堤で津波から守られている。
This town is protected from tsunamis by a seawall.
防潮堤の建設が海
Construction of tide embankments is underway along the coast.
A breakwater built offshore to reduce wave force. 防潮堤 is typically a wall on the coastline itself.
Compound of 防潮 (bōchō, 'tide prevention') and 堤 (tei, 'embankment').