ululate
Concise Oxford English Dictionary © 2008 Oxford University Press:
ululate /ˈjuːljʊleɪt, ˈʌl-/
▶verb howl or wail, typically to express grief.
– derivatives
ululant adjective,
ululation noun.
ululant adjective,
ululation noun.
– origin C17: from L. ululat-, ululare ‘howl, shriek’, of imitative origin.
'ululate' also found in these Oxford entries:

