noun
at the risk of one's life; risking death
Used in expressions like 死に身で or 死に身になる to describe acting with disregard for one's own life. Often implies a desperate or self-sacrificial effort.
彼は死に身で火の中に飛び込んだ。
He jumped into the fire at the risk of his life.
死に身になって戦う覚悟だ。
I am prepared to fight risking death.
noun
Refers to a dead body, often in contrast to 生き身 (living body). This sense is less common and may appear in literary or traditional contexts.
See also: 生き身
生き身は動くが、死に身は動かない。
A living body moves, but a dead body does not.