Dish thrown at the pigs (9)
I believe the answer is:
spaghetti
'dish' is the definition.
(I know that spaghetti is a type of pasta)
'thrown at the pigs' is the wordplay.
'thrown' is an anagram indicator.
'at'+'the'+'pigs'='atthepigs'
'atthepigs' anagrammed gives 'SPAGHETTI'.
(Other definitions for spaghetti that I've seen before include "Stringed pasta" , "complex interchange just before junction" , "Italian dish made from pasta, often Bolognese" , "Birmingham interchange" , "Pasta - Birmingham junction" .)