Seafood dish (6)
I believe the answer is:
scampi
'seafood dish' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for scampi that I've seen before include "Fish dish, often in rings" , "Crumbed prawns" , "Crumby seafood dish" , "Breaded prawns" , "Dish of fried shrimps or prawns" .)