a well-known British department store (= large shop where many types of goods are sold in different departments), selling clothes, food and other products. The first shops were started by Michael Marks and Thomas Spencer in the late 19th century in Leeds, and there are now shops in most British towns, and in many countries across the world. Marks and Spencer is famous for its well-made clothes at fairly low prices, and is traditionally the place where many people go to buy items such as underwear and socks rather than the latest fashions. The company is also known informally as Marks and Sparks or simply Marks. I buy all my clothes at Marks.