English Dictionary

nicotine

/ˈnɪkətiːn/

noun

(organic chemistry) An alkaloid (C₁₀H₁₄N₂), commonly occurring in the tobacco plant. In small doses it is a habit-forming stimulant; in larger doses it is toxic and is often used in insecticides.

Nicotine is a highly addictive alkaloid found in tobacco.

意味（1）

(organic chemistry) An alkaloid (C₁₀H₁₄N₂), commonly occurring in the tobacco plant. In small doses it is a habit-forming stimulant; in larger doses it is toxic and is often used in insecticides.

He is addicted to nicotine.

意味（2）

(figuratively) Tobacco, cigarettes

He's got nicotine stains on his fingers.