sacrarialadj.

/səˈkrɛːrɪəl/Etymology: < sacrarium n.2 + -al suffix1.
Ornithology.
the world > animals > birds > bones > [adjective] > of vertebrae
1890 E. Coues ii. iv. 211.
This entry has not yet been fully updated (first published 1909; most recently modified version published online June 2018).