bellow

nouns

a very loud utterance (like the sound of an animal)
"his bellow filled the hallway"
bellow, bellowing, holla, holler, hollering, hollo, holloa, roar, roaring, yowl

verbs

shout loudly and without restraint
bawl, bellow
is derived from
bellowing
make a loud noise, as of animal
"The bull bellowed"
bellow, roar
is derived from
bellowing