hara-kiri

n [U] ritual suicide using a sword to cut open one's stomach, formerly practised by Japanese Samurai to avoid dishonour when they believed they had failed in their duty 切腹, 剖腹（旧时日本武士在自知任务失败时为免受屈辱的自杀手段）.

hangover, hank, hanker, hankering, hanky, hanky-panky, Hansard, hansom, haphazard, haphazardly, hapless, haporth, happen, happen on, happen to, happening, happily, happiness, happy, happy-go-lucky, harangue, harass, harassment, harbinger, harbor, harbour, harbour (US harbor), harbour-master, harbourage (US harborage), hard, hard cash, hard copy, hard core, hard court, hard cover, hard currency, hard disk, hard drug, hard labour, hard of hearing,