noun
skin and bones; body; physical frame
Literary or old-fashioned term for the physical body, emphasizing its material substance. Often used in contexts of hardship, toil, or self-sacrifice.
彼は肌骨を惜しまず働いた。
He worked tirelessly, sparing neither skin nor bone.
肌骨を削るような努力の末、成功を収めた。
After a grueling effort that wore down his body, he achieved success.