expression, ichidan verb
throw away one's life; sacrifice oneself
Idiomatic expression meaning to give up one's life, often for a cause or in a self-sacrificing manner. Can be used literally or figuratively.
彼は国のために身を捨てる覚悟だった。
He was prepared to sacrifice his life for his country.
身を捨ててこそ浮かぶ
Sometimes you have to risk everything to find a way out.