The term 'appliance purchase' can be summarized by the solution to the crossword clue 'washer, ' which is a six-letter word. A washer is a type of home appliance used for washing clothes, linens, and other fabrics. It is typically a large, rectangular machine with a lid that opens and closes, and it is powered by electricity or gas. Washers are often purchased as part of an appliance package when people move into a new home or apartment.