Concludes they’re what one’s aiming for (4)
I believe the answer is:
ends
'concludes' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for ends that I've seen before include "They may be made to meet!" , "Finishes (could be loose or dead?)" , "Borders" , "Terminates in dens" , "Some bowling" .)