bellow
bel-low
noun
A deep, loud roar or shout.
"We heard a sudden bellow from the bull."
verb
To utter a deep, loud roar or shout, often in anger or pain.
"The sergeant bellowed orders at the recruits."
Thesaurus
Synonyms: roar, holler, holla, roaring, yowl, bellowing, hollo, hollering, holloa, Saul Bellow, Solomon Bellow, bawl