Spoiled RAF basket meal (9)
I believe the answer is:
'meal' is the definition.
(I know that breakfast is a type of meal)
'spoiled raf basket' is the wordplay.
'spoiled' is an anagram indicator.
'rafbasket' with letters rearranged gives 'BREAKFAST'.
(Other definitions for breakfast that I've seen before include "Fat bakers having a meal" , "One could be first on the table" , "croissants?" , "First meal at Tiffany's" , "beginning to day" .)