sacral crest
nounMedical Definition of sacral crest
: any of several crests or tubercles on the sacrum: as
a
: one on the midline of the dorsal surface
— called also median sacral crest
b
: any of a series of tubercles on each side of the dorsal surface lateral to the sacral foramina that represent the transverse processes of the sacral vertebrae and serve as attachments for ligaments
— called also lateral crest, lateral sacral crest