Jewellery (5)
I believe the answer is:
bling
'jewellery' is the definition.
(informal term for jewellery)
This is the entire clue.
(Other definitions for bling that I've seen before include "Jazzy" , "Showy jewellery" , "Jewellery for show" , "Flashy, ostentatious jewellery" , "Showy jewels etc" .)