Triangular Bone at Base of Spine
This page is the CodyCross answer for the clue below from La Bella Roma, Group 413, Puzzle 2 (Caput Mundi).
Question is: Triangular Bone at Base of Spine
and the answer is: SACRUM
Word Meaning:
SACRUM — (anatomy) A large triangular bone at the base of the spine, located between the two ilia (wings of the pelvis) and formed from vertebrae that fuse in adulthood.
Definitions from Wiktionary.