Definition Of scums
(of a liquid) become covered with a layer of dirt or froth.
the lagoon scummed over
a layer of dirt or froth on the surface of a liquid.
green scum found on stagnant pools
Example Of scums
A problem may occur when the solids content rises in a lagoon, resulting in the accumulation of solids or scum above the surface.
Also, application of clear waterproofing materials may lock in moisture and crystalline growth, causing more scumming and possible spalling of brick.
And if so, who did it: the poor, drug-dealing scum from the nearby projects, or his own rich friends?
And then he replied, ‘You're nothing but Eastern scum and a capitalist rip-off son-of-a-bitch.'
Danielle ‘Danny’ Sofer is conflicted, trying to maintain her femininity while beating down street scum on a daily basis.