Gravy right for dish (6)
I believe the answer is:
saucer
'dish' is the definition.
(saucer is a kind of dish)
'gravy right' is the wordplay.
'gravy' becomes 'sauce' (I've seen this before).
'right' becomes 'r' (common abbreviation).
'sauce'+'r'='SAUCER'
'for' acts as a link.
(Other definitions for saucer that I've seen before include "A small shallow curved dish" , "If flying, it would have alien pilots" , "Dish for a teacup" , "alien craft?" , "Cup holder" .)