四し海かい

noun

the whole world; the seven seas

Literary or classical term for the entire world, often used in poetic or elevated contexts. The literal meaning is 'the four seas', reflecting an ancient worldview.

• 四し海かいを股またにかけて活かつ躍やくする。

  He is active across the whole world.

• 四し海かい兄けい弟ていの精せい神しんで接せっする。

  Treat everyone with the spirit of universal brotherhood.