Lack the one edition that includes it (4)
I believe the answer is:
need
'lack the one edition that includes it' is the definition.
'need' can be an answer for 'lack' (I've seen this before). I am not sure about the remainder of the definition.
'lack the one edition that includes' is the wordplay.
'that includes' indicates a hidden word.
'NEED' is hidden within 'lack one edition'.
Can you help me to learn more?
(Other definitions for need that I've seen before include "Lack or require" , "Require; want" , "Call" , "must have results!" , "'miss'" .)