mucus
Mucus (noun) means the slippery fluid produced by the lining of the nose, throat, lungs, gut and other internal surfaces, which keeps them moist and traps dust and germs. Example: “A cold makes the body produce far more mucus than usual.”
How to use mucus
Learner’s notesIn plain EnglishThe slippery stuff your nose and throat make.
Neutral and medical; everyday speech often uses 'snot' or 'catarrh' instead.
Fill the gap
Can you complete this real example?
A cold makes the body produce far more _____ than usual.
Etymology
From Latin mucus, meaning nasal mucus.