To separate (the best part of something from the regular part)
Skim-off Sentence Examples
When a sufficient number are not available for a two hours' defecation, it is the practice in some factories to skim off the scums that rise to the top, and then boil up the juice for a few minutes and skim again, and, after repeating the operation once or twice, to run off the juice to separators or subsiders of any of the kinds previously described.
Before planting, skim off grass turfs with a spade and pile upside down in a corner to rot down to form loam.
Every few hours, skim off more being careful to only skim off more being careful to only skim off the cream, not the milk.
Every few hours, skim off more being careful to only skim off the cream, not the milk.
Gently bring to a simmer and skim off the scum as it forms on the surface.