The most common and most likely answer to this crossword clue is the 4 letter word APSE
A
P
S
E
More clues leading to the result APSE
- Monkey outside small recess
- Mirror either side of small recess
- Part of church Liberal abandoned by mistake
- Church feature identified in downloads, so to speak
- Echo around small part of church
- Part of church left abandoned by mistake
- Some retired female’s particular niche
- Primate drawing in small recess in a church
- Some despair about part of church
- Primate holding service initially in part of church
Buddy explains!

The straight part
We know that "recess" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case recess = apse.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 APSE mean?
APSE noun- A semicircular projection from a building, especially the rounded east end of a church that contains the altar.
- The bishop's seat or throne in ancient churches.
- A reliquary, or case in which the relics of saints were kept.
- The nearest and furthest points to the centre of gravitational attraction for a body in orbit. More usually called an apsis.
- An aspen tree.