天てん狗ぐ倒だおし

noun

mysterious loud sound in mountain forests

A folkloric term for an unexplained loud noise, like a tree falling, heard in forested mountains. Traditionally attributed to tengu felling trees. Used in storytelling and regional folklore.

See also: 天狗

• 山やま奥おくで天てん狗ぐ倒だおしが聞きこえたという話はなしを聞きいた。

  I heard a story about a mysterious loud sound being heard deep in the mountains.