The basic anatomy of a lighter includes a fuel reservoir, ignition mechanism, and flame-producing element. Traditional lighters often use a flammable liquid, such as butane, stored under pressure in a refillable reservoir. When activated, the ignition mechanism releases a small amount of fuel, which is then ignited by a spark or flame-producing element, creating a steady flame that can be adjusted in size.

Lighters serve a practical purpose in everyday life, offering a convenient way to start fires or light up objects. They are commonly used by smokers to light cigarettes or cigars, by outdoor enthusiasts for camping and outdoor activities, and by homeowners for lighting candles or gas stoves.