: a poisonous substance found in small amounts in tobacco
Medical Definition of NICOTINE
: a poisonous alkaloid C10H14N2 that is the chief active principle of tobacco and that is used as an insecticide
Biographical Note for NICOTINE
Ni·cot\nē-kō\ , Jean(1530?–1600), French diplomat. While French ambassador to Portugal, Nicot introduced tobacco to France by sending tobacco seeds as a gift to the French court in 1560. Linnaeus named the plant genus Nicotiana in his honor in 1753.