The term 'BOARD GAME CUBE' is a combination of two words, 'board game' and 'CUBE'. A board game is a type of game that is played on a flat surface, usually with pieces that are moved around the board according to a set of rules. A CUBE is a three-dimensional object with six square faces. The crossword solution for this term is 'DIE', which is a small CUBE with numbers or symbols on each side that is used in many board games.