Puts back together, without principal objectives (4)
I believe the answer is:
ends
'objectives' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for ends that I've seen before include "Some bowling" , "ambitions" , "Finishes (could be loose or dead?)" , "designs" , "Rooms in bothy" .)