The most common and most likely answer to this crossword clue is the 8 letter word DIOCESAN
I've seen this crossword clue in The Times
D
I
O
C
E
S
A
N
More clues leading to the result DIOCESAN
- Deacon is excited to become a bishop
- Bishop's said no different church must be included
- Takes risks, holding over a new bishop
- Bishop once said to be struggling
- One among deacons possibly?
- Bishop Dai coaches Shaun regularly
- See leader once said to be unreliable
- See leader’s once said to have changed
- Finishes article about senior officer of a religious area
- Bishop and I so busy outside church
Buddy explains!

The straight part
We know that "bishop" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bishop = diocesan.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 DIOCESAN mean?
DIOCESAN noun- The bishop of a diocese.
- An inhabitant of a diocese.
- Pertaining to a diocese.