Quiz: Remember the definition of mal de mer?
1767, in anatomy, "of or pertaining to the sacrum, from Modern Latin sacralis. In anthropology, "pertaining to religious rites," 1882, from Latin sacrum "sacred thing, rite" (see sacred). Related: sacralization.
sacral sa·cral (sā'krəl)adj. In the region of or relating to the sacrum.