n (game of Go) A move that threatens the immediate capture of one or more stones. In chess, the closest equivalent words would be check, where a king is under attack from one or more pieces and pawns, or the state of being en prise, when a piece or pawn is undefended and can be taken without recapture.
n (video games) An Atari video game system or computer, such as the Atari 2600 or Atari ST.