The most common and most likely answer to this crossword clue is the 8 letter word LYCHGATE
I've seen this crossword clue in The Times
L
Y
C
H
G
A
T
E
More clues leading to the result LYCHGATE
Buddy explains!
The straight part
We know that "Opening" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case opening = lychgate.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 LYCHGATE mean?
LYCHGATE noun- A churchyard gateway with a roof, under which a corpse was laid during a funeral to await the arrival of the clergyman.