bellow

(noun) a very loud utterance (like the sound of an animal). Synonyms: bellowing, holla, holler, hollering, hollo, holloa, roar, roaring, yowl. Example: "His bellow filled the hallway."

(noun) United States author (born in Canada) whose novels influenced American literature after World War II (1915-2005). Synonyms: Bellow, Saul Bellow, Solomon Bellow.

(verb) shout loudly and without restraint. Synonyms: bawl.

(verb) make a loud noise, as of animal. Synonyms: roar. Example: "The bull bellowed."