Cryptic crossword clue
I pass out in part of church 5

The most common and most likely answer to this crossword clue is the 5 letter word APSIS

I've seen this crossword clue in The Times
A
P
S
I
S


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 = apsis.
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 APSIS mean?

APSIS noun
  1. A recess or projection, with a dome or vault, at the east end of a church; an apse.
  2. Either of the points in the elliptical orbit of a planet or comet where it is closest or furthest from the sun; perihelion or aphelion; an apside

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