Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
launder [ˈlɔːndər] vt (clothes, sheets) стира́ть (вы́стирать perf) (money) отмыва́ть (отмы́ть*perf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.