Colorless Alkaloid, Active Constituent of Tobacco

This page is the CodyCross answer for the clue below from Airport, Group 444, Puzzle 3 (International Flight).

Question is: Colorless Alkaloid, Active Constituent of Tobacco

and the answer is: NICOTINE

Word Meaning:

NICOTINE — (organic chemistry) An alkaloid (C₁₀H₁₄N₂), commonly occurring in the tobacco plant.

Definitions from Wiktionary.

Colorless alkaloid, active constituent of tobacco — CodyCross Answer | CodyCross Solutions