The most common and most likely answer to this crossword clue is the 7 letter word PAGEANT
I've seen this crossword clue in Independent
P
A
G
E
A
N
T
More clues leading to the result PAGEANT
- Summon soldier for display
- Long to cover mature show
- Parade errand boy in front of social worker
- Steel drum keeping time with first of trumpeters in procession
- Rampage antisocially over parade
- Time-consuming, long display
- Call soldiers from the rear to contain Nationalist parade
- Call for worker in show
- Call for colonist seen in procession
- Show involving servant and soldier
Buddy explains!

The straight part
We know that "parade" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case parade = pageant.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 PAGEANT mean?
PAGEANT noun- A competition in which participants compete for a determination that one is the most physically attractive.
- An elaborate public display, especially a parade in historical or traditional costume.
- A spectacular ceremony.
- A wheeled platform for the exhibition of plays, etc.
- To exhibit in show; to represent; to mimic.