The term 'top off, as a drink' can be summarized by the crossword solution 'FRESHEN, ' which is a seven-letter word. To 'top off, as a drink' means to add a small amount of liquid to a beverage in order to fill it up or to make it more flavorful. This is often done with alcoholic beverages, such as adding a splash of soda or juice to a glass of wine or a shot of liquor. It can also be done with non-alcoholic drinks, such as adding a bit of cream to coffee or a splash of lemonade to iced tea.