"Esky" is a term that originated from Australia and is often used to refer to a portable cooler box used for keeping drinks and food chilled. There are many synonyms for "esky," including cooler, ice chest, ice box, and chilly bin. Other variations include beverage coolers, cooler bags, and insulated boxes. These products come in varying sizes, materials, and features, making them suitable for different purposes such as outdoor activities like camping, picnics, or beach trips. The usage of these cooler boxes is not limited to Australia but has become a popular term worldwide, with variations of names to suit local dialects.