DNF adj.— «There is—or was—a cache there called “Valley View Too” which hadn’t been found since last May, though with only one “Did Not Find” logged since then. (Curiously, the caching slang for a failed search...
groove n.— «“The Groove”—Slang term for the best route around the racetrack. Drivers appreciate ovals that offer more than one groove, but a few years typically are needed before a new track develops multiple lines that can promote...
flip v. to force oneself to vomit, esp. among horse-racing jockeys. (source: Double-Tongued Dictionary)