Definition: nicotiana

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Source: WordNet (r) 1.7 

Nicotiana
     n : American and Asiatic aromatic herbs and shrubs with viscid
         foliage [syn: Nicotiana, genus Nicotiana]

Source: Webster's Revised Unabridged Dictionary (1913) 

Nicotiana \Ni*co`ti*a"na\, n. [NL. See Nicotian.] (Bot.)
   A genus of American and Asiatic solanaceous herbs, with
   viscid foliage and funnel-shaped blossoms. Several species
   yield tobacco. See Tobacco.