Source : Webster's Revised Unabridged Dictionary (1913)

Teamwork \Team"work`\, n.
   Work done by a number of associates, usually each doing a
   clearly defined portion, but all subordinating personal
   prominence to the efficiency of the whole; as, the teamwork
   of a football eleven or a gun crew.

         Is the teamwork system employed, or does one workman
         make the whole cigar?                    --U. S.
                                                  Consular
                                                  Repts.

Teamwork \Team"work`\, n.
   Work done by a team, as distinguished from that done by
   personal labor.

Source : WordNet®

teamwork
     n : cooperative work done by a team

Source : Free On-Line Dictionary of Computing

Teamwork
     
         A {SASD} tool from {Sterling
        Software}, formerly {CADRE Technologies}, which supports the
        {Shlaer/Mellor} {Object-Oriented} method and the
        {Yourdon-DeMarco}, {Hatley-Pirbhai}, {Constantine} and {Buhr}
        notations.
     
        Teamwork was abandoned when {Computer Associates}
        acquired Sterling Software in March 2000.
     
        (2002-05-29)