Puts a stop to (4)
I believe the answer is:
ends
'puts a stop to' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ends that I've seen before include "Ceases, closes or dies" , "Desired results" , "Stops in dens" , "Odds and --" , "Justifications for means, sometimes?" .)