Human Tailbone
This page is the CodyCross answer for the clue below from Amusement Park, Group 220, Puzzle 1 (House of Mirrors).
Question is: Human Tailbone
and the answer is: COCCYX
Word Meaning:
COCCYX — (medicine, formal) The final (bottom-most) fused vertebrae at the base of the spine, the tailbone.
Definitions from Wiktionary.