The most common and most likely answer to this crossword clue is the 8 letter word PRISONER
P
R
I
S
O
N
E
R
More clues leading to the result PRISONER
- Voting system about right, is one captive?
- Convicted criminal lying about sources of illegal stash, right?
- Nosey type taking in young male inmate
- Individual in force runs to get convictEDITED by the setter later in the day to:I run after force that's tailed a convict
- Runs after subject, is held captive
- What murderer who has run for nothing has become?
- Crooked person, one ending in slammer?
- Convict -- one forcing open safe just after entering?
- Captive rips off a Republican
- Heading for rehabilitation, is one held within Pollsmoor’s walls?
Buddy explains!

The straight part
We know that "Convicted criminal" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case convicted criminal = prisoner.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 PRISONER mean?
PRISONER noun- A person incarcerated in a prison, while on trial or serving a sentence.
- Any person held against their will.