Meaning of the word scum in English

What does scum mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

scum

US /skʌm/
UK /skʌm/

Noun

1.

a layer of unpleasant or unwanted material that has formed on the top of a liquid:

Example:
The lake near the factory was covered with gray, foul-smelling scum.
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