The Collaborative International Dictionary of English v.0.48:

Manufactory \Man`u*fac"to*ry\, n.; pl. -ries. [Cf. L.
   factorium an oil press, properly, place where something is
   made. See Manufacture.]
   1. Manufacture. [Obs.]
      [1913 Webster]

   2. A building or place where anything is manufactured; a
      factory.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Manufactory \Man`u*fac"to*ry\, a.
   Pertaining to manufacturing.
   [1913 Webster]

WordNet (r) 3.0 (2006):

manufactory
    n 1: a plant consisting of one or more buildings with facilities
         for manufacturing [syn: factory, mill, manufacturing
         plant, manufactory]