Nicotine
Pronunciation : Nic"o*tine ( or )
Part of Speech : n.
Etymology : [F. nicotine. See Nicotian.] (Chem.)
Definition : Defn: An alkaloid which is the active principle of tobacco. It is a colorless, transparent, oily liquid, having an acrid odor, and an acrid burning taste. It is intensely poisonous. Ure.
Source : Webster's Unabridged Dictionary, 1913