The most common and most likely answer to this crossword clue is the 4 letter word NAVE
I've seen this crossword clue in The Daily Telegraph
N
A
V
E
More clues leading to the result NAVE
- Rotter does away with king in cathedral area
- Part of church, one lacking nothing, containing Bible
- Some position a vestry in this part of church
- Centre of main avenue is in church
- A villain finally turning up on the fifth dimension’s fourth hub
- Wicked boy heard in church
- Old rogue beheaded in part of church
- Villain heading off for part of church
- Part of church where Welshman’s turned up
- Dishonest person’s pronouncement in middle of church
Buddy explains!

The straight part
We know that "Part of church" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case part of church = nave.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 NAVE mean?
NAVE noun- The middle or body of a church, extending from the transepts to the principal entrances.
- A hub of a wheel.
- The navel.