Correct leaders of European directorate in triplicate (4)
I believe the answer is:
edit
'correct' is the definition.
(edit can mean to correct or emend)
'leaders of european directorate in triplicate' is the wordplay.
'leaders of' suggests taking the first letters.
The first letters of 'european directorate in triplicate' is 'EDIT'.
(Other definitions for edit that I've seen before include "amend copy" , "Prepare to publish" , "Literally, arrange" , "Be in charge of (newspaper)" , "work on newspaper?" .)