nicotine

Noun

A poisonous alkaloid found in tobacco plants, a stimulant.
an alkaloid poison that occurs in tobacco; used in medicine and as an insecticide
An alkaloid (C₁₀H₁₄N₂), commonly occurring in the tobacco plant.
Tobacco or cigarettes.

Examples

He is addicted to nicotine.
He's got nicotine stains on his fingers.
The intense concentration during Scrabble was almost as addictive as nicotine.

Origin / Etymology

Borrowed from French nicotine, equivalent to Nicot + -ine, named after Jean Nicot (1530–1604), the French ambassador to Portugal, who sent tobacco seeds back to France in 1561. The etymology of the surname itself is unclear.

Scrabble Score: 10

nicotine: valid Scrabble (US) TWL Word
nicotine: valid Scrabble Word in Merriam-Webster MW Dictionary
nicotine: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 13

nicotine: valid Words With Friends Word