sea mouth

Noun

That part of a river, estuary or lagoon which broadens out as it meets the sea

Japanese Meaning

河口 – 川や河川の入り口部分で、海に流れ込む際に広がる部分を指します。

Local fishermen set their nets across the sea mouth to catch fish returning from the open ocean.

地元の漁師たちは外洋から戻ってくる魚を捕るために河口に網を張った。

Sense（1）

That part of a river, estuary or lagoon which broadens out as it meets the sea

sea mouths

（ plural ）