The most common and most likely answer to this crossword clue is the 5 plus 2 plus 3 plus 4 letter word ORDER OF THE BATH
I've seen this crossword clue in The Guardian
O
R
D
E
R
O
F
T
H
E
B
A
T
H
More clues leading to the result ORDER OF THE BATH
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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.