Pipe

From WeedWiki

Pipes, often called bowls, can be made of blown glass, wood, ceramic, stone, or metal. To avoid inhalation of undesirable vapors, certain reactive metals, such as aluminum, are typically not used to make smoking pipes. When speaking about a specific pipe, the term "bowl," "cone piece" or "crater" (the narrowest) often refers to the indentation where cannabis is to be combusted.

Blown-glass pipes are usually intricately and colorfully designed, and can contain materials that change color or become more vivid with repeated use. Such pipes usually have a hole which is covered with a finger during inhalation, and then uncovered to clear the pipe of smoke and cool the burning cannabis. Slang names for this hole include: rush, choke, carb (short for carburetor), "clear hole" or just "clear", shotgun, and shotty. Pipes are often assembled with various metal fittings that screw together, with interchangeable, frequently decorative parts. Metal pipes may get hot, because metal is a good conductor of heat; this is avoided by having a crater-diameter narrow enough to maintain low burning temperature, which also protects against wasting THC. (Tobacco pipes are usually too wide for cannabis use.) For traditional utensils see kiseru (Japan) and midwakh (Middle East)

Pipes are a highly common way of smoking marijuana as it is small and easily transportable. In addition, many pipes are made to be Smokeless Pipes In which smoke cannot escape from the cone piece and therefore all of the herb or plant is completely smoked.