sacrum
/ˈseɪkrəm/noun
(pl. sacra /ˈseɪkrə/ 或sacrums)
- Anatomy a triangular bone in the lower back formed from fused vertebrae and situated between the two hip bones of the pelvis【剖】骶骨。
词源
mid 18th cent.: from Latin os sacrum, translation of Greek hieron osteon 'sacred bone' (from the belief that the soul resides in it).