tobacco
noun
plural tobaccos
Definition of tobacco
1
: any of a genus (Nicotiana) of chiefly American plants of the nightshade family with viscid foliage and tubular flowers
especially
: a tall erect annual tropical American herb (N. tabacum) cultivated for its leaves
2
: the leaves of cultivated tobacco prepared for use in smoking or chewing or as snuff
3
: manufactured products of tobacco (such as cigars or cigarettes)
also
: smoking as a practice
has sworn off tobacco
4
: a moderate brown