sacrum; sacral bone
Anatomical term for the triangular bone at the base of the spine.
The sacrum is a large bone located in the center of the pelvis.
hermit-like quality; unworldly appearance; outstanding physique
Only when written 仙骨
Refers to a person's appearance or aura that suggests a reclusive, unworldly, or strikingly unusual quality, as if they were a mountain hermit. Restricted to the 仙骨 spelling.
There is something hermit-like about his appearance.
Standard kanji spelling for both the anatomical sacrum and the hermit-like quality sense.
Rarely used kanji form for the anatomical sacrum; 仙骨 is overwhelmingly more common.
The anatomical sense is a straightforward compound of 仙 (hermit, wizard) and 骨 (bone), originally from Chinese medical terminology. The hermit-like quality sense is a metaphorical extension of the same characters, suggesting the appearance of a mountain hermit.