The Collaborative International Dictionary of English v.0.48:

Rectory \Rec"to*ry\ (-t?*r?), n.; pl. Rectories (-r?z). [Cf.
   OF. rectorie or rectorerie, LL. rectoria.]
   1. The province of a rector; a parish church, parsonage, or
      spiritual living, with all its rights, tithes, and glebes.
      [1913 Webster]

   2. A rector's mansion; a parsonage house.
      [1913 Webster]