jughead
n.— «There has long been a rivalry between the “runners” as the thoroughbreds are more commonly called, and the “jugheads” which running horse people sometimes call standardbreds.» —“Jockeys at great risk of injury; Always potential harm can come to those on horseback” by Scott Rowe Barrie Examiner (Ontario) May 5, 2007. (source: Double-Tongued Dictionary)