Ditch husband with cry of triumph (2-2)
I believe the answer is:
ha-ha
'ditch' is the definition.
(I know that ha-ha is a type of ditch)
'husband with cry of triumph' is the wordplay.
'husband' becomes 'h'.
'with' is a charade indicator (letters next to each other).
'cry of triumph' becomes 'aha' (I've seen this in another clue).
'h'+'aha'='HA-HA'
(Other definitions for ha-ha that I've seen before include "Hidden ditch" , "Laugh - ditch acting as fence" , "Sunken fence or wall" , "Loud laugh" , "Ditch with wall in it - sounds merry" .)