2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Sacrum \Sa"crum\, n.; pl {sacra}. [NL., fr L. sacer sacred, os
sacrum the lowest bone of the spine.] (Anat.)
That part of the vertebral column which is directly connected
with or forms a part of the pelvis.
Note: It may consist of a single vertebra or of several more
or less consolidated. In man it forms the dorsal, or
posterior, wall of the pelvis, and consists of five
united vertebr[ae], which diminish in size very rapidly
to the posterior extremity, which bears the coccyx.
From WordNet r 1.6 [wn]:
sacrum
n : 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
more about sacrum
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