The definition of raucous is loud or disorderly.(adjective)
An example of raucous is a party at college with lots of drinking.
See raucous in Webster's New World College Dictionary
Origin: L raucus < IE echoic base *reu-, to give hoarse cries, mutter > L rumor, OE reon, to lament
See raucous in American Heritage Dictionary 4
Origin: From Latin raucus.
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