The term 'drive home' can be interpreted in a few different ways. In the context of a crossword puzzle, it could mean to STRESS, emphasize, or batin something. To STRESS something is to give it special importance or emphasis. To emphasize something is to draw attention to it or make it stand out. To batin something is to make it more meaningful or to add depth to it. Therefore, the term 'drive home' could be interpreted as giving special importance, drawing attention, or adding depth to something.