Result of dispute expected by end of April (4)
I believe the answer is:
duel
'result of dispute' is the definition.
(in history, disputes sometimes led to duels)
'expected by end of april' is the wordplay.
'expected' becomes 'due' (I've seen this before).
'by' says to put letters next to each other.
'end of' indicates one should take the final letters.
The last letter of 'april' is 'l'.
'due'+'l'='DUEL'
(Other definitions for duel that I've seen before include "Prearranged engagement" , "Two-person combat" , "Prearranged fight with deadly weapons between two people" , "honourable affair" , "Contest between two people, perhaps with weapons" .)