an act of killing yourself by cutting open your stomach with a sword, performed especially by the samurai in Japan in the past, to avoid losing honour切腹,剖腹自盡(尤指舊時日本武士爲免受屈辱而自殺的行爲)
Word Originmid 19th cent.: colloquial Japanese, from hara ‘belly’ + kiri ‘cutting’.