The most common and most likely answer to this crossword clue is the 9 letter word PAGEANTRY
I've seen this crossword clue in The Times
P
A
G
E
A
N
T
R
Y
More clues leading to the result PAGEANTRY
- Show where the food’s kept: about time!
- Go after drug taken in polytheistic ceremony
- Show time raiding the larder
- Attendant and soldier supported by ridiculously empty pomp
- Spectacle taking long time in food store
- . Stillroom — takes time for show
- Show there is stillroom to get mature
- Rocky, Peg, Ryan, at empty display
- Gay parent’s elaborate display
Buddy explains!

The straight part
We know that "Show" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case show = pageantry.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 PAGEANTRY mean?
PAGEANTRY noun- A pageant; a colourful show or display, as in a pageant.