A blended iced coffee is often called a Frappuccino.
Frappuccino is a term popularized by Starbucks, but it generally refers to a blended iced coffee beverage. These drinks typically consist of coffee or a crème base, blended with ice, various flavorings like syrups, and often topped with whipped cream and/or spices. Some versions may even include blended refreshers. While "Frappuccino" is a brand name, it's become a common term to describe similar blended coffee drinks, regardless of where they are purchased. You might also hear them referred to as coffee smoothies or iced coffee blends.