Definition of


  1. (noun, body) wedge-shaped bone consisting of five fused vertebrae forming the posterior part of the pelvis; its base connects with the lowest lumbar vertebra and its tip with the coccyx

via WordNet, Princeton University

Alternate forms of Sacrum

Derivations: sacral

Hypernyms: bone, os

Origin of the word Sacrum

  1. "bone at the base of the spine," 1753, from L.L. os sacrum "sacred bone," from L. os "bone" + sacrum, neut. of sacer "sacred." Said to be so called because the bone was the part of animals that was offered in sacrifices. Translation of Gk. hieron osteon. But Gk. hieros also can mean "strong." more

via Online Etymology Dictionary, ©2001 Douglas Harper

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