A cigarette lighter is a small device used to create a flame for lighting cigarettes, cigars, or other items. It typically consists of a fuel reservoir, a spark mechanism, and a nozzle. The most common types are disposable lighters and refillable lighters, which can use butane or other flammable gases. Cigarette lighters have been around since the early 20th century and have evolved in design and functionality. They are often portable and can be found in various styles, including zippo lighters and electric lighters. Safety features, such as child-resistant mechanisms, are also common in modern designs.