The most common and most likely answer to this crossword clue is the 6 letter word PRISON
I've seen this crossword clue in Financial Times
P
R
I
S
O
N
More clues leading to the result PRISON
- Priest is working for porridge
- Bird is in for nuts, primarily
- Pair with one child in place of captivity
- Stir up negative response to teacher under pressure
- Nick is inside, lying for the most part
- . . . . cooler advertising works
- Can scientific leader probe the cause of mad cow disease?
- Jug can clink
- Parties regularly selected, happening in place with bars
- Nick is residing in flat, briefly
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 PRISON mean?
PRISON noun- A place or institution of confinement, especially of long-term confinement for those convicted of serious crimes or otherwise considered undesirable by the government.
- Confinement in prison.
- Any restrictive environment, such as a harsh academy or home.
- To imprison.