The most common and most likely answer to this crossword clue is the 5 plus 3 letter word INNER EAR
I've seen this crossword clue in Independent
I
N
N
E
R
E
A
R
More clues leading to the result INNER EAR
- Auditor's part behind with payments, reportedly, shillings down
- Pub entrance’s opening on back, where vestibule’s found
- Pinned out of bounds behind labyrinth
- On Tyneside, set up labyrinth
- Labyrinth in which you’ll find vestibule
- Secret auditor helps to maintain balance
- Place in your head where you might find a hammer, an anvil and a stirrup
- Pub extended primarily behind region of vestibule
Buddy explains!

The straight part
We know that "labyrinth" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case labyrinth = inner ear.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.