Design event at Edinburgh? (6)
I believe the answer is:
tattoo
This clue is a double definition.
'design' is the first definition.
(tattoo is a kind of design)
'event at edinburgh?' is the second definition.
(the Royal Edinburgh Military Tattoo music event)
(Other definitions for tattoo that I've seen before include "Skin painting" , "Personal design" , "Indelible marks drawn on the skin" , "Example of body art" , "Pageant; drum beat" .)