Definition of "Brainfuck"

Brainfuck

proper noun
1. A minimalist esoteric programming language, created for amusement, in which every basic machine instruction is represented by a single character.
  Quotations
  Some eccentric languages are structurally just as simple, but intentionally made awfully hard to understand — like the notorious languages Brainfuck […] or Malbolge.
  2005, G. Braziller, Inc., edited by Morten Søndergaard, Perttu Rastas, and Björn Norberg, Get real: real time + art + theory + practice + history, page 48
  Brainfuck is an archetypically minimalist language, providing merely eight commands, each represented by a single character. These commands operate on an array of 30000 byte cells initialized to 0.
  2008, Matthew Fuller, Software Studies: A Lexicon, page 269
  Brainfuck language is the gotoless programming language, and it has a implicit byte pointer which is free to move […] In addition, Brainfuck defines only eight-instructions associated with the pointer […]
  2010, Miguel Soriano, Sihan Qing, Javier López, Information and Communications Security: 12th International Conference, Icics 2010, Barcelona, Spain, December 15-17, 2010 Proceedings, page 345