Definition of "Skim" :

noun: reading or glancing through quickly

noun: a thin layer covering the surface of a liquid

"There was a thin skim of oil on the water."

verb: read superficially

verb: move or pass swiftly and lightly over the surface of

verb: remove from the surface

"Skim cream from the surface of milk."

verb: coat (a liquid) with a layer

verb: cause to skip over a surface

verb: travel on the surface of water

verb: examine hastily

adjective: used of milk and milk products from which the cream has been removed

"Yogurt made with skim milk."