蝶ちょう道どう

noun

flight path of a butterfly

Refers to the regular route or path that butterflies follow, often used in ecological or poetic contexts.

• 蝶ちょう道どうを観かん察さつすると、蝶ちょうがよく通とおるルートがわかる。

  By observing the butterfly flight path, you can learn the routes butterflies frequently take.