The term 'sticker on a windshield' can be summarized as a DECAL, which is a five-letter word. A DECAL is a type of adhesive label or sticker that is typically used to decorate a variety of surfaces, such as glass, metal, plastic, and wood. Decals are often used to display logos, slogans, or other artwork on cars, boats, and other vehicles. They are also used to decorate windows, walls, and other surfaces. Decals are usually made from vinyl or other durable materials that can withstand outdoor conditions.