Display outside is heaven (8)
I believe the answer is:
paradise
'heaven' is the definition.
(synonyms)
'display outside is' is the wordplay.
'display' becomes 'parade' (parade is a kind of display).
'outside' is an insertion indicator.
'parade' going around 'is' is 'PARADISE'.
(Other definitions for paradise that I've seen before include "blissful place?" , "Heaven, nirvana, Valhalla etc" , "Garden of Eden" , "Felicity" , "Sensual garden" .)