Nicotine

['nɪkətiːn] or ['nɪkətɪn]

Definition

(noun.) an alkaloid poison that occurs in tobacco; used in medicine and as an insecticide.

Checked by Clifton--From WordNet

Definition

(n.) 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.

Editor: Natasha

Definition

n. a poisonous volatile alkaloid base obtained from tobacco.—adj. Nicō′tian pertaining to tobacco from Jean Nicot (1530-1600) the benefactor who introduced it into France in 1560.—n. a smoker of tobacco.—n.pl. Nicotiā′na the literature of tobacco.—n. Nic′otinism a morbid state induced by excessive misuse of tobacco.

Checker: Phyllis