Looking around, I see that translated a few ways- Revenge for (of) the (a) Boundary Wall - my own guess would have been something like Revenge (at, or of) the (or a) Fence - not knowing anything of the plot of the top of my head though. I would suggest looking at a terrific resource called www.operone.de but... as of today or so it is -not there-. :( :( ...
No, Eric, it's definitely Boundary Wall because that wall is central to the plot. It divides in two a castle, the halves of which are inhabited by the two main rival protagonists. Noskowski based the plot on the play Zemsta (http://en.wikipedia.org/wiki/Zemsta) (Revenge) by Aleksander Fredro.
Ah, thanks.