from The American Heritage® Dictionary of the English Language, 4th Edition
- intransitive v. To howl, wail, or lament loudly.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. to howl loudly or prolongedly in lamentation or joy
- v. to produce a rapid and prolonged series of sharp noises with one's voice.
from the GNU version of the Collaborative International Dictionary of English
- intransitive v. To howl, as a dog or a wolf; to wail.
from The Century Dictionary and Cyclopedia
- To howl, as a dog or a wolf. To hoot or screech, as an owl.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. emit long loud cries
Latin ululāre, ululāt-, ultimately of imitative origin.(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin ululāre ("to howl"), of imitative origin. (Wiktionary)