ululo

Etymology
From a reduplicated  root; see also 🇨🇬, 🇨🇬, 🇨🇬, 🇨🇬, 🇨🇬,, dialectal 🇨🇬, and 🇨🇬 (whence 🇨🇬).

Verb

 * 1) to howl

Noun

 * 1) howl, ululation