刎ふん頸けいの交まじわり

expression, noun

inseparable friendship; friendship sealed by a willingness to die for each other

A classical Chinese expression describing a bond so deep that friends would not hesitate to be beheaded for one another. Used in literary or elevated contexts; not everyday vocabulary.

• 二人ふたりの間あいだには刎ふん頸けいの交まじわりがあると言いわれている。

  It is said that there is an inseparable friendship between the two.

• 彼かれらは刎ふん頸けいの交まじわりを結むすんだ。

  They formed a friendship sealed by a willingness to die for each other.