Definitions

1. verb

to let out a loud, mournful cry, especially in a repetitive or wailing manner.

“The wolf began to ululate in the distance, sending shivers down the hikers’ spines.”

2. noun

a long, mournful cry, especially one repeated in a series of rising and falling notes.

“The ululation of the sirens pierced through the foggy night, causing confusion among the sailors.”