Formal or literary term for death, often used in historical or solemn contexts.
death poem; dying words
Specifically refers to a poem or final words composed when facing death, especially in classical Japanese culture.
His passing was peaceful, surrounded by family.
The samurai composed his death poem and quietly passed away.
From 辞 (to take leave) + 世 (world). The sense of 'death poem' developed from the practice of composing a final poem upon leaving the world.