back·gam·mon n.  A game of chance and skill, played by two persons on a “board” marked off into twenty-four spaces called “points”.  Each player has fifteen pieces, or “men”, the movements of which from point to point are determined by throwing dice.  Formerly called tables.
 backgammon board, a board for playing backgammon, often made in the form of two rectangular trays hinged together, each tray containing two “tables”.
 backgammon board
      n : the board on which backgammon is played