Phlegm is the thick yellowish substance that develops in your throat and at the back of your nose when you have a cold.
= mucus
N-UNCOUNT
Phlegm is the thick yellowish substance that develops in your throat and at the back of your nose when you have a cold.
= mucus
N-UNCOUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012