tobacco

The definition of tobacco is a plant that yields nicotine-rich leaves, or nicotine-rich leaves that have been prepared to be smoked or chewed.

(noun)

The plant used to produce leaves that go into making Newports, Marlboro Lights or other cigarettes is an example of tobacco.

See tobacco in Webster's New World College Dictionary

noun pl. tobaccos

any of a genus (Nicotiana) of chiefly tropical American plants of the nightshade family, with hairy, sticky foliage and long-tubed, white, yellow, greenish, or purple flowers; esp., the species (N. tabacum) now widely cultivated for its leaves
the leaves of certain of these plants, prepared for smoking, chewing, or snuffing
products prepared from these leaves; cigars, cigarettes, snuff, etc.
the use of tobacco for smoking, etc.

Origin: Sp tabaco < ?; perhaps an old Sp name transferred to the New World plant

See tobacco in American Heritage Dictionary 4

noun pl. to·bac·cos or to·bac·coes

Any of various plants of the genus Nicotiana, especially N. tabacum, native to tropical America and widely cultivated for their leaves, which are used primarily for smoking.
The leaves of these plants, dried and processed chiefly for use in cigarettes, cigars, or snuff or for smoking in pipes.
Products made from these plants.
The habit of smoking tobacco: I gave up tobacco.
A crop of tobacco.

Origin:

Origin: Spanish tabaco

Origin: , possibly of Caribbean origin

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