Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
rasher [ˈræʃər] n (of bacon) ло́мтик
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
rash [ræʃ]
adj опроме́тчивый/опроме́тчив n (MED) сыпь f no pl (spate, of events, robberies) ряд* волна́#
he came out in a rash у него́ вы́ступила сыпь
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.