The Collaborative International Dictionary of English v.0.48:

Lorn \Lorn\ (l[^o]rn), a. [Strong p. p. of Lose. See Lose,
   Forlorn.]
   1. Lost; undone; ruined. [Archaic]
      [1913 Webster]

            If thou readest, thou art lorn.       --Sir W.
                                                  Scott.
      [1913 Webster]

   2. Forsaken; abandoned; solitary; bereft; as, a lone, lorn
      woman.
      [1913 Webster] Lorrie