Dictionary > Ruz
Then (“ahrk ruz” = “and then”)
(Book, Songs of Skyrim)
(POGGLE, p. 1097)
(PrimaGames.com)
adv. then, after which, next (in time)
Nuz aan sul, fent alok, fod fin vul dovah nok, fen kos nahlot mahfaeraak ahrk ruz! Paaz Keizaal fen kos stin nol bein Alduin jot!
But a day, shall arise, when the dark dragon's lies, will be silenced forever and then! Fair Skyrim will be free from foul Alduin's maw!
(Book, Songs of Skyrim)
Likely related to rul ‘when’.