sacral

Etymology

From Modern Latin sacralis, from Latin sacrum (“sacred, holy”) + -alis.

adj

1. (anatomy) Of the sacrum.
2. Sacred.
   An old site with sacral connotations. 2001, David L. Lieber, Jules Harlow, Etz Hayim: Torah and Commentary, page 877
   Compromise is awkward when religion is involved, and the several South Asian writing systems are considered sacral. 2005, Richard Oliver Collin, Revolutionary scripts: the politics of writing systems

noun

1. Any of the sacral bones that make up the sacrum.