<p><strong>Noun</strong></p><ul><li>Plural: tobaccos, tobaccoes.</li><li>Any of several plants belonging to the genus <em>Nicotiana</em>, of the nightshade family, especially one of those species, as <em>N. tabacum</em>, whose leaves are prepared for smoking or chewing or as snuff.</li><li>The prepared leaves, as used in cigarettes, cigars, and pipes.</li><li>Any product or products made from such leaves.</li><li>Any of various similar plants of other genera.</li></ul>