Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
twilight [ˈtwaɪlaɪt] n су́мерки mpl (morning) (предрассве́тные) су́мерки
in the twilight в су́мерках
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: