Source : Webster's Revised Unabridged Dictionary (1913)

Laystall \Lay"stall`\, n.
   1. A place where rubbish, dung, etc., are laid or
      deposited.[Obs.] --B. Jonson.

            Smithfield was a laystall of all ordure and filth.
                                                  --Bacon.

   2. A place where milch cows are kept, or cattle on the way to
      market are lodged. [Obs.]