[ verb ] move or pass swiftly and lightly over the surface of
Used in print(Richard Sanders Allen, "When Fogg Flew the Mail"...)
Often , threading through the overcast , he was forced to fly close_to the ground by a low ceiling , skimming above the Winooski or the White_River along the line of the broken railroad .
[ verb ] coat with a layer; of liquids
[ noun ] a thin layer covering the surface of a liquid
"there was a thin skim of oil on the water"