The most common and most likely answer to this crossword clue is the 9 letter word COMFORTER
I've seen this crossword clue in Financial Times
C
O
M
F
O
R
T
E
R
More clues leading to the result COMFORTER
- French count runs round for Holy Spirit?
- Dummy run follows company beginning to muster strength
- One giving reassurance about working to reform
- Dummy company’s strength – hiding millions at first from Revenue
- Part in sitcom for terrible dummy
- Person arriving to protect stronghold, one that brings relief
- Get firm with maiden — and loud, right? Not maybe if she needs this!
- One who provides relief to person who arrives to besiege army post
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 COMFORTER mean?
COMFORTER noun- A person who comforts someone who is suffering.
- A padded cover for a bed, duvet, continental quilt.
- A woollen scarf for winter.
- A pacifier.