The term 'duffle' is a type of BAG or COAT. It is usually made of heavy cloth and is cylindrical in shape, with a drawstring closure at the top. It is often used for carrying sports equipment, camping gear, or other items that need to be kept dry. The term 'duffle' can also refer to a type of COAT, which is typically made of wool and has a hood. It is usually worn as an outer layer of clothing in cold weather.