When Julius Caesar chose to cross the Rubicon River and march against his rival in Rome, he supposedly said Alea jacta est, or “The die is cast,” indicating that at that point, there was no going back. The phrase is a reference to...
Swarf is the metal filings, grit, or powder left by grinding and other machine work, the stuff Martin in Bostonia, California, saw on a safety sign warning workers to “Beware of coolant and swarf.” The word also has a verb use, meaning to cover...

