Source : WordNet®

teletypewriter
     n : a character printer connected to a telegraph that operates
         like a typewriter [syn: {teleprinter}, {teletype machine},
          {telex}, {telex machine}]

Source : Free On-Line Dictionary of Computing

teletypewriter
     
         (Nearly always abbreviated to "teletype" or
        "{tty}") An obsolete kind of {terminal}, with a noisy
        mechanical {printer} for output, a very limited {character
        set}, and poor print quality.
     
        See also {bit-paired keyboard}.
     
        (2000-04-02)