the white remains left on a poly lens after being generated, safety beveled, or edged.
Christa forgot to clean the swarf off the lenses before she final inspected them.
by The Lab Rat March 30, 2009
Top Definition
Any amount of very finely ground material created as a result of mechanical surface friction.
When changing my engine oil, I noticed a little bit of metallic swarf on my magnetic drain plug.
by 175623226 December 29, 2011
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