coccyx
The final (bottom-most) fused vertebrae at the base of the spine, the tailbone.
Related words
- coccydynia
- coccygeous
- coccygeal
- coccygectomy
- sacrococcyx
Word history
From Ancient Greek "κόκκυξ" (cuckoo).
Where this comes from
This definition is adapted from “coccyx” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.