A housecoat is a type of clothing that is worn around the home. It is typically a loose-fitting garment, often made of cotton or other comfortable fabrics. The term 'housecoat' can also refer to a ROBE or a DUSTER. A ROBE is a loose-fitting outer garment that is usually knee-length and has long sleeves. It is typically made of a soft fabric such as cotton or silk. A DUSTER is a lightweight, loose-fitting coat that is usually ankle-length and has long sleeves. It is typically made of a lightweight fabric such as cotton or linen.