Laurel and Hardy's headgear was famously known to be DERBIES, which is a seven-letter word. DERBIES are a type of hat that is characterized by a rounded crown and a stiff brim that is usually turned up at the sides. The style of hat was popularized in the late 19th century and was often worn by men for formal occasions. Laurel and Hardy were known to wear DERBIES in many of their films, making them an iconic part of their look.