Show off; procession (6)
I believe the answer is:
parade
This clue is a double definition.
'show off' is the first definition.
(I've seen this in another clue)
'procession' is the second definition.
(I know that parade is a type of procession)
(Other definitions for parade that I've seen before include "exhibition" , "March-past of troops etc." , "Exhibit" , "Public procession as on St Patrick's Day" , "Promenade" .)