The term 'clears the board' can be summarized as the act of erasing or deleting something. In this case, it is referring to the act of erasing a board, such as a chalkboard or whiteboard. This term is often used in educational settings, where teachers and students use boards to write down notes and information. It is also used in other contexts, such as in board games, where players must clear the board of pieces before starting a new game.