Knifewrench Share definition Flag The best invention ever created. Coined by the Janitor in Scrubs. "Knifewrench! For Kids!" "Knifewrennnnnnnnnnch! Practical AND safe!" Knifewrench by Benstan November 27, 2006 0 0 Get merch Get the Knifewrench mug. Buy Now — $32.95 See more merch