In the UK, the word "Swarfega" may be used as a generic term for all similar cleaners, particularly if they have the same green jelly-like appearance as genuine Swarfega. According to the company website, the name derives from "swarf", a Derbyshire word for oil and grease, and "ega", as in "eager to clean". "Swarf" now commonly refers to the metal shavings and chips resulting from metalworking operations. The word did not originally mean oil or grease as Deb claimed, but rather the waste material from a grindstone (or similar material resulting from wear in a machine). This material would be a wet or oily mixture of grit abraded from the wheel and filings from the workpiece.