プー太郎[puutarou] vagabond
悪太郎[akutarou] bad boy
一姫二太郎[ichihimenitarou] It's good to have a girl first and then a boy
下郎[gerou] servant
外郎[uirou] sweet rice jelly

女郎[jorou] prostitute (esp. Edo period)
女郎花[ominaeshi] golden lace (Patrinia scabiosifolia)
新郎[shinrou] bridegroom
新郎新婦[shinroushinpu] bride and groom
バカ野郎[bakayarou] idiot