Puck, essentially, is a DISK-shaped object that is used in various sports. It is most commonly associated with ice hockey, where it is used as the main object of play. In other sports, such as field hockey and lacrosse, it is also used as a ball-like object. The term puck is derived from the Middle English word 'pouke, ' which means a bundle of feathers or fur. The modern puck is usually made of hard rubber or plastic and is about three inches in diameter. It is also sometimes referred to as a DISC or DISK.