- Sports.
- two games, as of baseball, between the same teams on the same day in immediate succession.
- two games, as of basketball, between two different pairs of teams on the same day in immediate succession.
- two performances or two events occurring one after the other or within a short time of each other.
- a railroad train pulled by two locomotives.
- a train drawn by two locomotives coupled together to provide extra power
- two games played consecutively by the same teams or by two different teams
- a coin with the impression of a head on each side
- a double ice-cream cone
