Gild (9)
I believe the answer is:
embellish
'gild' is the definition.
(I know that gild is a more specific form of embellish)
This is the entire clue.
(Other definitions for embellish that I've seen before include "Ornament, improve by adding detail" , "Adorn" , "Make more attractive by adding ornament" , "Add ornamental details, make more colourful" , "Beautify" .)