The whole kit and caboodle (1,2,1)
(Other definitions for everything that I've seen before include "All that is; life in general" , "great deal" , "the works" , "The whole lot" , "All items" .)
'the whole kit and caboodle' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for a to z that I've seen before include "Alphabet" , "Gazetteer" .)