I like to call it suicide circle.

我喜欢称之为循环自杀。

youdao

His companions preferred suicide to surrender, so they decided to form a circle and to kill every third person and to proceed around the circle until no one was left.

他的同伴优先考虑自杀投降，所以他们决定在围成一个圈，都杀了第三人和继续圆形广场，直到没有留下一人。

youdao

The role wasn't a complete sinecure: the ruling warlord, Tokugawa Ieyasu, ordered the seppuku, or ritual suicide, of one of Koetsu's circle, the tea master Furuta Oribe, for some real or imagined disloyalty.

CNN: ASIANOW - TIME Asia | The Subtle Magic of Koetsu

In 1987, Rudolf Hess, the last member of Adolf Hitler's inner circle, died at a hospital near Spandau Prison at age 93, an apparent suicide.

CNN: Saturday,