Source : Webster's Revised Unabridged Dictionary (1913)

Connection \Con*nec"tion\, n. [Cf. {Connexion}.]
   1. The act of connecting, or the state of being connected;
      junction; union; alliance; relationship.

            He [Algazel] denied the possibility of a known
            connection between cause and effect.  --Whewell.

            The eternal and inserable connection between virtue
            and hapiness.                         --Atterbury.

   2. That which connects or joins together; bond; tie.

            Any sort of connection which is perceived or
            imagined between two or more things.  --I. Taylor.

   3. A relation; esp. a person connected with another by
      marriage rather than by blood; -- used in a loose and
      indefinite, and sometimes a comprehensive, sense.

   4. The persons or things that are connected; as, a business
      connection; the Methodist connection.

            Men elevated by powerful connection.  --Motley.

            At the head of a strong parliamentary connection.
                                                  --Macaulay.

            Whose names, forces, connections, and characters
            were perfectly known to him.          --Macaulay.

   {In this connection}, in connection with this subject.

   Note: [A phrase objected to by some writers.]

   Note: This word was formerly written, as by Milton, with x
         instead of t in the termination, connexion, and the
         same thing is true of the kindred words inflexion,
         reflexion, and the like. But the general usage at
         present is to spell them connection, inflection,
         reflection, etc.

   Syn: Union; coherence; continuity; junction; association;
        dependence; intercourse; commerce; communication;
        affinity; relationship.

Source : WordNet®

connection
     n 1: a relation between things or events (as in the case of one
          causing the other or sharing features with it); "there
          was a connection between eating that pickle and having
          that nightmare" [syn: {connexion}, {connectedness}]
          [ant: {unconnectedness}]
     2: the state of being connected; "the connection between church
        and state is inescapable" [syn: {link}, {connectedness}]
        [ant: {disjunction}]
     3: an instrumentality that connects; "he soldered the
        connection"; "he didn't have the right connector between
        the amplifier and the speakers" [syn: {connexion}, {connector},
         {connecter}, {connective}]
     4: (usually plural) a person who is influential and to whom you
        are connected in some way (as by family or friendship);
        "he has powerful connections"
     5: the process of bringing ideas or events together in memory
        or imagination; "conditioning is a form of learning by
        association" [syn: {association}, {connexion}]
     6: a connecting shape [syn: {connexion}, {link}]
     7: a supplier (especially of narcotics)
     8: shifting from one form of transportation to another; "the
        plane was late and he missed his connection in Atlanta"
        [syn: {connexion}]
     9: the act of bringing two things into contact (especially for
        communication); "the joining of hands around the table";
        "there was a connection via the internet" [syn: {joining},
         {connexion}]