noun
glorious death; dying in a blaze of glory
Idiomatic expression comparing a noble or spectacular death to a flower that blooms at the moment of death. Often used in samurai or warrior contexts, but can be applied metaphorically to any dramatic, honorable end.
彼は戦場で死に花を咲かせた。
He died a glorious death on the battlefield.
あの老兵は最後の戦いで死に花を咲かせた。
That old soldier met a glorious end in his final battle.
Compound of 死に (stem of 死ぬ, 'to die') and 花 ('flower'). The exact historical origin is uncertain, but the metaphor of a flower blooming at death is a traditional Japanese poetic image for a noble or spectacular end.