骨ほね折おり

noun

effort; trouble; pains

Refers to the effort, trouble, or hard work one puts into something, often with a nuance of going out of one's way. Common in phrases like 骨折り損 (wasted effort) and 骨折り甲斐 (reward for one's effort).

• 彼かれの骨ほね折おりで、プロジェクトは成せい功こうした。

  Thanks to his efforts, the project was a success.