sacrum
sacrum[ˈseɪkrəm, ˈsak-](pl. sacra -krə 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
语源- mid 18th cent.: from Latin os sacrum, translation of Greek hieron osteon 'sacred bone' (from the belief that the soul resides in it)
考试词汇表