c.1300, from Old French orine, urine (12c.) and directly from Latin urina "urine," from PIE *ur- (cognates: Greek ouron "urine"), variant of root *we-r- "water, liquid, milk" (cognates: Sanskrit var "water," Avestan var "rain," Lithuanian jures "sea," Old English wær, Old Norse ver "sea," Old Norse ur "drizzling rain"), related to *eue-dh-r (see udder).