noun, noun or participle which takes 'suru', intransitive verb
making one's best exertions; giving one's all
A yojijukugo meaning to work with utmost effort, often to the point of self-sacrifice. Used in formal or literary contexts.
彼は粉骨砕身して会社のために働いた。
He worked with all his might for the company.
粉骨砕身の努力が実を結んだ。
His utmost efforts bore fruit.