兎と角かく亀き毛もう

expression

things that do not exist; horns on rabbits, fur on turtles

A Buddhist-derived yojijukugo used idiomatically to refer to something that is impossible or nonexistent, like a rabbit's horns or a turtle's fur. Rare in everyday speech; mostly encountered in literary or religious contexts.

• 「兎と角かく亀き毛もう」は、この世よに存そん在ざいしないもののたとえとして使つかわれる。

  兎角亀毛 is used as a metaphor for things that do not exist in this world.