The most common and most likely answer to this crossword clue is the 6 letter word COCCYX
C
O
C
C
Y
X
More clues leading to the result COCCYX
- Bony thing, angle on figure by the sound of it?
- 1 Bone from rooster – half a dozen, say
- Tail of County Cricket Club with two unknowns
- Major, possibly, with two hundred unknowns he sat on
- Tail end of the human column comprised of commanding officer leading two hundred ten around Yugoslavia, initially
- Bone from rooster one after five, reportedly
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does COCCYX mean?
COCCYX noun- The final (bottom-most) fused vertebrae at the base of the spine, the tailbone.