Source : Webster's Revised Unabridged Dictionary (1913)

Establishment \Es*tab"lish*ment\, n. [Cf. OF. establissement, F.
   ['e]tablissement.]
   1. The act of establishing; a ratifying or ordaining;
      settlement; confirmation.

   2. The state of being established, founded, and the like;
      fixed state.

   3. That which is established; as:
      (a) A form of government, civil or ecclesiastical;
          especially, a system of religion maintained by the
          civil power; as, the Episcopal establishment of
          England.
      (b) A permanent civil, military, or commercial, force or
          organization.
      (c) The place in which one is permanently fixed for
          residence or business; residence, including grounds,
          furniture, equipage, etc.; with which one is fitted
          out; also, any office or place of business, with its
          fixtures; that which serves for the carrying on of a
          business; as, to keep up a large establishment; a
          manufacturing establishment.

                Exposing the shabby parts of the establishment.
                                                  --W. Irving.

   {Establishment of the port} (Hydrography), a datum on which
      the tides are computed at the given port, obtained by
      observation, viz., the interval between the moon's passage
      over the meridian and the time of high water at the port,
      on the days of new and full moon.

Source : WordNet®

establishment
     n 1: the act of forming something; "the constitution of a PTA
          group last year"; "it was the establishment of his
          reputation"; "he still remembers the organization of the
          club" [syn: {constitution}, {formation}, {organization},
           {organisation}]
     2: an organization founded and united for a specific purpose
        [syn: {institution}]
     3: the persons (or committees or departments etc.) who make up
        a body for the purpose of administering something; "he
        claims that the present administration is corrupt"; "the
        governance of an association is responsible to its
        members"; "he quickly became recognized as a member of the
        establishment" [syn: {administration}, {governance}, {governing
        body}, {brass}, {organization}, {organisation}]
     4: a public or private structure (business or governmental or
        educational) including buildings and equipment for
        business or residence
     5: any large organization
     6: (ecology) the process by which a plant or animal becomes
        established in a new habitat [syn: {ecesis}]
     7: the cognitive process of establishing a valid proof [syn: {validation}]