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Webster 1913 Edition

Noun.

(Chem.)

A poisonous narcotic alkaloid extracted from the leaves of Indian tobacco (

Lobelia inflata

) as a yellow oil, having a tobaccolike taste and odor.

lobeline ‎(countable and uncountable, plural lobelines)

A natural alkaloid found in various plants, mostly of the genus Lobelia, a white amorphous powder which is freely soluble in water, used as an aid to smoking cessation.