noun / verb
bellow
BEL-oh/ˈbeləʊ/
A deep, loud roar or shout, or to make this sound.
The woman bellows across the open space with her hands around her mouth.

Etymology
Bellow apparently continues Old English bylgan. First used for animal cries, especially those of cows and bulls, it later extended to loud human shouting.
In context
A koala bellow is a really strong, powerful way that they can communicate. Generally speaking, it's only the males that will bellow.
More examples
- He bellowed across the yard for everyone to stop.
- The captain bellows orders over the engine noise.
- We hear the animal bellowing behind the barn.
Forms
bellow · bellows · bellowed · bellowing