WordNet (r) 3.0 (2006):

teletypewriter
    n 1: a character printer connected to a telegraph that operates
         like a typewriter [syn: teletypewriter, teleprinter,
         teletype machine, telex, telex machine]

The Free On-line Dictionary of Computing (30 December 2018):

teletypewriter
teletype

    (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)