A joint ( /dʒɔɪnt/), or spliff, is a rolled marijuana cigarette. Unlike commercial tobacco cigarettes, joints are ordinarily hand-rolled by the user with rolling papers, though in some cases they are machine-rolled. Rolling papers are the most common rolling medium in industrialized countries; however, brown paper, cigarettes with the tobacco removed, beedies with the tobacco removed, receipts, and newspaper can also be used, particularly in developing countries. Modern papers are manufactured in a range of sizes from a wide variety of materials including rice, hemp, and flax, and are also available in liquorice and other flavoured varieties.
A joint can vary in size, typically containing between 0.25 to 1 g (1⁄64 to 1⁄32 oz) net weight of cannabis. Tobacco may or may not be used in the rolling process.
Although joints by definition contain cannabis, regional differences have been noted. In Europe, in certain Commonwealth nations, and more recently in North America, joints, or spliffs, typically include a bit of rolled cigarette packet cardboard or business card in one end to serve as a mouthpiece, commonly referred to as the crutch, filter, or roach.
The term "spliff" is sometimes used to distinguish a joint prepared with both cannabis and tobacco, as is commonly done in European countries, where joints containing only cannabis are rarely smoked. However, in the West Indies where this term originated (especially Jamaica), a spliff is simply a marijuana cigarette, normally containing no tobacco.
Special e-cigarettes have also been designed for use with cannabis extract.