Scum
noun
1.
a film or layer of foul or extraneous matter that forms on the surface of a liquid.
2.
refuse or offscourings.
3.
a low, worthless, or evil person.
4.
such persons collectively; riffraff; dregs.
5.
scoria (def 1).
verb (used with object), scummed, scumming.
6.
to remove the scum from.
7.
to remove as scum.
verb (used without object), scummed, scumming.
8.
to form scum; become covered with scum.
noun
1.
a layer of impure matter that forms on the surface of a liquid, often as the result of boiling or fermentation
2.
the greenish film of algae and similar vegetation surface of a stagnant pond
3.
Also called dross, scruff. the skin of oxides or impurities on the surface of a molten metal
4.
waste matter
5.
a worthless person or group of people
verb scums, scumming, scummed
6.
(transitive) to remove scum from
7.
(intransitive) (rare) to form a layer of or become covered with scum
scum
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