Merriam-Webster Collegiate Dictionary - chess

 I. noun  Etymology: Middle English ches, from Anglo-French escheks, esches, plural of eschec check at ~ — more at check  Date: 14th century a game for 2 players each of whom moves 16 pieces according to fixed rules across a checkerboard and tries to checkmate the opponent's king  II. noun  Etymology: origin unknown  Date: 1736  1. a weedy annual European bromegrass (Bromus secalinus) widely naturalized in North America as a weed especially in grain  2. any of several weedy bromegrasses related to ~