The term 'linoleum square' is a type of flooring that consists of a square TILE made of linoleum. Linoleum is a type of resilient flooring material made from solidified linseed oil, cork dust, wood flour, and other organic materials. It is often used in kitchens and bathrooms due to its durability and water-resistant properties. The tiles are usually laid in a pattern and can be easily replaced if damaged.