Crossword Genius

Tail bone (6)

Ross

I believe the answer is:

coccyx

'tail bone' is the definition.
(synonyms)

This is all the clue.

(Other definitions for coccyx that I've seen before include "End of the human spinal column" , "Small triangular bone at base of spine" , "Tailbone" , "Tail bone" , "fused vertebrae" .)

I've seen this clue in The Independent, The Guardian and The Telegraph.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.