The most common and most likely answer to this crossword clue is the 9 letter word AITCHBONE
I've seen this crossword clue in Independent
A
I
T
C
H
B
O
N
E
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 AITCHBONE mean?
AITCHBONE noun- A cut of beef lying above the rump bone.
- The rump bone itself.