'doubleheader' definitions:

Definition of 'doubleheader'

From: WordNet
noun
Two games instead of one (especially in baseball when the same two teams play two games on the same day) [syn: twin bill, doubleheader, double feature]

Definition of 'doubleheader'

From: GCIDE
  • doubleheader \doubleheader\ n. two events, usually entertainment or sports performances, occurring immediately in succession or within a short time of each other; especially, two sports games played by the same teams on the same day, one right after another.
  • Note: A doubleheader in baseball is often scheduled between teams when a previously shceduled game is postponed, as due to rain or other interfering factors. In such cases, the admission price for the doubleheader remains that of a single game, though two games are played.
  • Syn: twin bill, double feature. [WordNet 1.5]