chalk
n.— «Chalk: Years ago—before computers, if you can imagine—bets were recorded on a large chalkboard. The favorites would get the most checks and thus the most chalk, making picking the chalk the term for picking the favorite. This, however, is nothing to be proud of. No one brags about picking the winner when the chalk comes home—which happens about a third of the time.» —“The lingo” Star-Ledger (New Jersey) Aug. 4, 2005. (source: Double-Tongued Dictionary)
Further reading
What’s up with ketchup? The shifting history and spelling of the name of this condiment. For centuries, ketchup was a fishy sauce originating in Asia—the tomatoes came only later! Plus, a new book shows what’s lost when a language dies: when there...
Lisa from Tabernacle, New Jersey, grew up using the term cabbage night to refer to the night before Halloween when all manner of mischief takes place. The term itself goes back to the 1860s, while the custom of pranks on October 30 is older. The...