ABACUS n.
A board, tray, or table, divided into perforated compartments, for holding cups, bottles, or the like; a kind of cupboard, buffet, or sideboard. Abacus harmonicus (Mus.), an ancient diagram showing the structure and disposition of the keys of an instrument. Crabb.
BACKGAMMON 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 i…