Definition: Coliseum is a type of stadium that was used for public spectacles and as a place for military parades, athletic competitions, and other events. It typically features an open-air arena with grandstands, seating capacity usually in the thousands, and is surrounded by a massive wall or fence to protect spectators from enemy fire. The term "coliseum" can also refer to a type of musical instrument that was used in ancient Greek theater for dramatic performances, typically made of wood or metal. The name