Name embedded in flashy decoration (7)
I believe the answer is:
garnish
'decoration' is the definition.
(garnish is a kind of decoration)
'name embedded in flashy' is the wordplay.
'name' becomes 'n' (common abbreviation e.g. on forms).
'embedded in' indicates putting letters inside (I've seen this in other clues).
'flashy' becomes 'garish' (synonyms).
'n' inserted within 'garish' is 'GARNISH'.
(Other definitions for garnish that I've seen before include "Decorate food for table" , "Decorate, embellish" , "Adorn a dish" , "Add a trimming to a dish" , "Decorate with herbs" .)