Source : WordNet®

upload
     v : transfer a file or program to a central computer from a
         smaller computer or a computer at a remote location [ant:
          {download}]

Source : Free On-Line Dictionary of Computing

upload
     
        /uhp'lohd/ To transfer programs or data over a digital
        communications link from a smaller or peripheral "client"
        system to a larger or central "host" one.
     
        Opposite: {download}.
     
        [{Jargon File}]
     
        (1994-10-27)