Tobacco (Nicotiana tabacum L.) is a broad-leafed plant of the nightshade family, indigenous to North and South America, whose dried and cured leaves are often smoked (see tobacco smoking) in the form of a cigar or cigarette, or in a smoking pipe, or in a water pipe or a hookah. Tobacco is also chewed, "dipped" (placed between the cheek and gum), and consumed as finely powdered snuff tobacco, which is sniffed into the nose. ...