The Collaborative International Dictionary of English v.0.48:

Stillatory \Stil"la*to*ry\, n.; pl. -ries. [From Still, for
   distill. Cf. Still, n., and Distillatory, a.]
   1. An alembic; a vessel for distillation. [R.] --Bacon.
      [1913 Webster]

   2. A laboratory; a place or room in which distillation is
      performed. [R.] --Dr. H. More. --Sir H. Wotton.
      [1913 Webster]