海かい食しょく柱ちゅう

noun

sea stack; stack

Geological term for a steep column of rock formed by coastal erosion, standing isolated from the shore.

• オーストラリアの十じゅう二に使し徒とは有ゆう名めいな海かい食しょく柱ちゅうだ。

  The Twelve Apostles in Australia are famous sea stacks.