👉 Mitts is a slang term that refers to a specific type of hat worn on the left side of the head. It's usually made from cotton or wool and has a wide brim at the back, which provides shade during the day when it's sunny outside. The term "mitt" comes from the French word "métis," which means "little" or "small." So in this context, "mitts" could be used to refer to the small, round hats worn