Wolf's cry (4)
I believe the answer is:
howl
'wolf's cry' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for howl that I've seen before include "Cry loudly" , "Bay - cry" , "Laugh (or cry?)" , "Long, loud, emotional cry" , "Long, loud, emotional utterance" .)