すいへいせん水平線suiheisen
1.

A line that appears on the surface of the water, marking the boundary where the sea meets the sky, contributing to the visual experience of vastness in nature.

2.

A straight line that is perpendicular to the direction of gravity on Earth, representing a level plane of reference in physical space.

3.

The visual demarcation between water and sky, often associated with the perspective of distance and the transition from land to sea.

4.

A conceptual line symbolizing the limit of one’s view, often evoking feelings of openness and infinity in landscapes that include large bodies of water.

Example:

太陽が水平線の下に沈んだ。