(ほね)()れる

ほねがおれる
expression
to be hard work; to be laborious
idiomwork
1. to be hard work; to take great effort
Said of a task that demands great effort; literally 'the bones break.' (ほね)()れる仕事(しごと) is a laborious job. The transitive (ほね)()る means to take pains, usually on someone else's behalf. The phrase can also be literal: to break a bone.
この仕事(しごと)(ほね)()れる。
This job is hard work.
Learning a foreign language as an adult is laborious.

Literally 'the bones break' under the effort. The literal sense, to break a bone, also exists; context decides.

Common patterns

Similar words