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

Newsqueak

   A concurrent applicative language with synchronous
   channels.

   ["Newsqueak: A Language for Communicating with Mice", R. Pike
   CSTR143, Bell Labs (March 1989)].

   ["The Implementation of Newsqueak", Rob Pike, Soft Prac & Exp
   20(7):649-659 (July 1990)].