mucus

US /ˈmjuː.kəs/
UK /ˈmjuː.kəs/
"mucus" picture
1.

a slimy substance, rich in mucins, secreted by mucous membranes and glands for lubrication and protection.

:
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When you have a cold, your body produces more mucus.
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The snail left a trail of mucus behind it.
:
phlegmsnotslime