骨を折る

[hone-wo-oru]

Literal translation:

break a bone

Meaning:

make efforts, travail, take a lot of trouble

Example:

人の努力をあざ笑う人間に、骨を折って稼いだお金を受け取る資格はない。

Those who mock at the efforts of others do not deserve to receive hard-earned money.

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骨 [hone]: bone

折る [oru]: break, fold

努力 [doryoku]: effort

あざ笑う [azawarau]: mock, deride

人間 [ningen]: human being

稼ぐ [kasegu]: earn

資格 [shikaku]: qualification