Source : Webster's Revised Unabridged Dictionary (1913)

Interworking \In`ter*work"ing\, n.
   The act of working in together; interweaving. --Milton.

Source : Free On-Line Dictionary of Computing

interworking
     
         Systems or components, possibly from different
        origins, working together to perform some task.  Interworking
        depends crucially on {standards} to define the {interfaces}
        between the components.  The term implies that there is some
        difference between the components which, in the absence of
        common standards, would make it unlikely that they could be
        used together.  For example, {software} from different
        companies, running on different {hardware} and {operating
        systems} can interwork via standard network {protocols}.
     
        (1998-11-22)