Bring into alignment (4)
I believe the answer is:
sync
'bring into alignment' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sync that I've seen before include "Agreement in time" , "Unison (abbrev.)" , "Relationship when things occur at the same time" , "In which one's matching" , "go together" .)