verb intransitiveWord forms: ˈuluˌlated or ˈuluˌlating
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'ululate'< L ululatus, pp. of ululare, to howl: echoic