Plaid is a pattern consisting of criss-crossed horizontal and vertical bands in multiple colors. It is most commonly associated with Scotland, where it is known as TARTAN. The term 'PLAID' is derived from the Scottish Gaelic word for blanket, which is 'plaide'. The term 'TARTAN' is derived from the French word for cloth, which is 'tiretaine'. GLEN is a type of PLAID pattern that is typically composed of two or more colors. It is usually made up of stripes of different widths and colors, and is often used to create a checkered effect.