noun A list of minor or supporting contests printed on the same bill as the main event (primarily fighting or racing, such as the main fight at a boxing match or wrestling, horse or car racing, etc.), occurring before or after the main event.
noun The events so listed.
noun A card lower than another given card or pair.
The eight on the turn was another undercard to her pair of nines
noun The supporting candidate on a ticket, such as vice president.