Ring has odd embellishment (7)
I believe the answer is:
garnish
'embellishment' is the definition.
(garnish is a kind of embellishment)
'ring has odd' is the wordplay.
'odd' indicates anagramming the letters.
'ring'+'has'='ringhas'
'ringhas' is an anagram of 'GARNISH'.
(Other definitions for garnish that I've seen before include "Decorate food for sharing" , "Dress - trimmings" , "Adorn a dish" , "Decorate with herbs" , "Sharing (anag) - dress" .)