The most common and most likely answer to this crossword clue is the 4 plus 7 letter word STAR CHAMBER
I've seen this crossword clue in Financial Times
S
T
A
R
C
H
A
M
B
E
R
More clues leading to the result STAR CHAMBER
- Court formality concluded with warning signal
- Court formality, a warning sign
- Court once putting warning light on carbohydrate
- Formality a warning sign, where justice was rarely served
- Group of ministers stiffen tone
- Court in celebrity bedroom
- Old English court in leading dictionary
- Old court to stiffen caution for motorists
- Meat brought in with crab: rest distributed in court
- Stiffen precious material, naturally preserved for Tudor court
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.