remove (a substance) from the surface of a liquid

as the scum rises, skim it off

go or move quickly and lightly over or on a surface or through the air

he let his fingers skim across her shoulders

read (something) quickly so as to note only the important points

he skimmed the report

she skimmed through the newspaper

a thin layer of a substance on the surface of a liquid

a skim of ice

an act of reading something quickly or superficially

a quick skim through the pamphlet