expression, ichidan verb
take a rest; have a breather; relax after work
Idiomatic expression literally meaning 'rest one's bones'. Used for taking a break, especially after physical or mental exertion.
仕事が終わったら、少し骨を休めよう。
Let's take a short rest after work.
旅の疲れを癒すため
To recover from the trip, I relaxed my weary bones at the hot spring.