The term 'Laundry Supply' can be broken down into two crossword solutions: STARCH (6 letters) and SOAP (4 letters). STARCH is a product used to stiffen fabric, usually made from corn, wheat, or potatoes. It is often used to give clothes a crisp, professional look. SOAP is a cleaning agent made from fats and oils that helps to remove dirt and stains from fabrics. Both of these products are essential for laundry supplies, as they help to keep clothes looking clean and fresh.