sac·rum
noun/ˈseɪkrəm/, /ˈsækrəm/
/ˈseɪkrəm/, /ˈsækrəm/
(plural sacra
(anatomy)/ˈseɪkrə/, /ˈsækrə/
/ˈseɪkrə/, /ˈsækrə/
, sacrums)- a bone in the lower back, between the two hip bones of the pelvis
骶骨 Word Originmid 18th cent.: from Latin os sacrum, translation of Greek hieron osteon ‘sacred bone’ (from the belief that the soul resides in it).