Ululate v. i. : To howl, as a dog or a wolf; to wail; as, ululating jackals.

Example:
Use the word Ululate in a sentence that clearly demonstrates your understanding of it's definition?

Taxonomy
ululation, tongue, Libyan women, free encyclopedia, commonly used, celebrations, Libya, history, traditional wedding, wedding songs, the Middle East, ancient Greece, mentions, Companion, Around the world, Oxford University Press, search, free dictionary.

Defination from the web:
... also an integral part of most weddings in these parts where, depending upon the local usages, women ululate to welcome the groom or bride or both. ...