A small device used to smoke cannabis, commonly made of glass, metal, wood, or other materials. Pipes come in all shapes and sizes, and are perhaps the simplest and most common method of consuming cannabis. A pipe has four main parts: the bowl, where cannabis is placed for combustion, the mouthpiece, where you draw in smoke, the chamber, which fills with smoke, and a carburetor, which allows you to control airflow (this is optional but found on a vast majority of pipes).