Lame sort of lunch, say (4)
I believe the answer is:
meal
'lunch say' is the definition.
(I know that dejeuner is a type of meal)
'lame sort' is the wordplay.
'sort' indicates an anagram.
'lame' with letters rearranged gives 'MEAL'.
'of' acts as a link.
(Other definitions for meal that I've seen before include "Repast" , "Breakfast, dinner or tea" , "Grain ground to powder" , "Eg, breakfast" , "Flour; food" .)