JMdict: 1668040

骨折る 【ほねおる】

  1. [v5r,vi] to exert oneself greatly; to take pains
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
骨 Skeleton, Bone, Remains, Frame コツ ほね 6
折 Fold, Break, Fracture, Bend, Yield, Submit セツ, シャク お.る, おり, お.り, -お.り, お.れる 4