Nicotine is the substance in tobacco that people can become addicted to.
Nicotine marks stained his chin and fingers.
N-UNCOUNT
Nicotine is the substance in tobacco that people can become addicted to.
Nicotine marks stained his chin and fingers.
N-UNCOUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012