Meaning

verb make a loud noise, as of wind, water, or vehicles

noun a deep prolonged loud noise

verb utter words loudly and forcefully

originFrom Middle English roren, raren, from Old English rārian (“to roar; wail; lament”), from Proto-West Germanic *rairōn, from Proto-Germanic *rairōną (“to bellow; roar”), from Proto-Indo-European *rey- (“to shout; bellow; yell; bark”), perhaps of imitative origin. Cognate with Saterland Frisian roorje (“to roar”), German röhren (“to roar”).

Etymology from Wiktionary, CC BY-SA 3.0