The term 'flooring plank' is a type of BOARD that is used to create a floor surface. It is usually made from wood, but can also be made from other materials such as vinyl or laminate. The crossword solution for this term is 'BOARD', which is a five-letter word. Flooring planks are typically installed in strips and are available in a variety of sizes, colors, and textures. They are often used in residential and commercial settings to provide a durable and attractive flooring option.