Party snack (6)
I believe the answer is:
canape
'party snack' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for canape that I've seen before include "Small thing to eat with a drink" , "Party nibble" , "part of a buffet?" , "Small appetizer" , "Savoury nibble offered at posh parties" .)