1. a plant with large leaves that are dried and prepared for smoking or chewing
2. the dried leaves of the tobacco plant used for smoking in cigarettes, cigars, or pipes

Examples

• The farmer grew tobacco on his plantation.
• Tobacco leaves are harvested in late summer.
• He rolled his own cigarettes using loose tobacco.
• The store sells various tobacco products.
• Tobacco use can cause serious health problems.
• She quit smoking tobacco last year.
• The tobacco industry faces many regulations.