骨身

1. Origins, structure, and basic meaning

• Structure: 骨身 is read as ほねみ and is a noun for one’s bones and flesh or the whole body, especially in idioms for deeply felt sensation and unstinting effort.
• Basic usage: Use the fixed expressions 骨身にしみる and 骨身を惜しまず.

2. Common pitfalls and similar expressions

• 骨身にしみる
  • It means that cold, pain, gratitude, or another feeling is experienced deeply, not that a substance literally penetrates bone.
• 骨身を惜しまず
  • It means working without sparing oneself, not literally giving up one’s bones and flesh.