In 1561, Jean Nicot, the French ambassador to Portugal, came back from Lisbon with a bunch of exotic New World plants, specifically tobacco. This was insanely popular in the royal court and all of France in general, and the country quickly rose to be one of the world's largest consumers of the plant. People were so enamored with tobacco that they named the alkaloid compund nicotine after Nicot (despite André Thevet, a French missionary, claiming that he introduced it first), who enthusiastically propagated its supposed medicinal benefits. -Ine is a traditional suffix for naming chemical compounds, so let's dispense with that. Nicot is a diminutive of the name Nicholas, which comes from Latin Nicolaus. This further derives from Ancient Greek Nikolaos, which can be translated into "victory of the people". The roots here are Nike, meaning "victory" (and often referring to the goddess of victory; assumed PIE origin), and laos, meaning "people" (from PIE lehwos, alson "people".
Adam Aleksic, a rising sophomore studying linguistics and government at Harvard University, has been described as the internet's sixth most famous etymologist. He also has disturbing interests in politics, vexillology, geography, board games, conlanging, and law.