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sacrum

noun
🔊/ˈseɪkrəm/, 🔊/ˈsækrəm/
🔊/ˈseɪkrəm/, 🔊/ˈsækrəm/
(plural sacra
🔊/ˈseɪkrə/, 🔊/ˈsækrə/
🔊/ˈseɪkrə/, 🔊/ˈsækrə/
, sacrums)
(anatomy解剖学)
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  1. a bone in the lower back, between the two hip bones of the pelvis骶骨Topics Bodyc2
    Word Originmid 18th cent.: from Latin os sacrum, translation of Greek hieron osteon ‘sacred bone’ (from the belief that the soul resides in it).