ululation (n.)

1590s, from Latin ululationem (nominative ululatio) "a howling or wailing," noun of action from past-participle stem of ululare "to howl, yell, shriek, wail, lament loudly," from a reduplicated imitative root (source also of Greek ololyzein "to cry aloud," Sanskrit ululih "a howling," Lithuanian uliuoti "to howl," Gaelic uileliugh "wail of lamentation," Old English ule "owl").