Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
sunburned [ˈsʌnbəːnd] adj = sunburnt
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
sunburn [ˈsʌnbəːn]
n (painful) со́лнечный ожо́г * is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.