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.