Source : WordNet®

sun lounge
     n : a room enclosed largely with glass and affording exposure to
         the sun [syn: {sun parlor}, {sun parlour}, {sun porch}, {sunroom},
          {solarium}]

Source : Free On-Line Dictionary of Computing

sun lounge
     
         (Great Britain) The room where all the {Sun}
        {workstation}s live.  The humour in this term comes from the
        fact that it's also in mainstream use to describe a solarium,
        and all those Sun workstations clustered together give off an
        amazing amount of heat.
     
        [{Jargon File}]
     
        (1995-01-19)