noun
: a horse race for which entries close 72 hours (exclusive of Sundays) or less before the first race of the day on which the race is scheduled to be run
noun
: a horse race for which entries close 72 hours (exclusive of Sundays) or less before the first race of the day on which the race is scheduled to be run
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012