nicotine
/ˈnɪkətiːn/noun
mass noun
1- a toxic colourless or yellowish oily liquid which is the chief active constituent of tobacco. It acts as a stimulant in small doses, but in larger amounts blocks the action of autonomic nerve and skeletal muscle cells.尼古丁, 烟碱。
1.1
- An alkaloid; chem. formula: C10H14N2.一种生物碱, 化学分子式： C10H14N2.
词源
early 19th cent.: from French, from NICOTIANA + -INE4.