noun 1.any game played with a ball, especially baseball or softball.
2.Informal. a situation and all its attendant circumstances:
Having a new administration in power changes the entire ball game at city hall. Compare
new ball game.
3.Archaeology. a ceremonial game of both ritual and sporting significance, played by teams on a ball court in Mesoamerican cultures from the Preclassic period to the Spanish conquest.
Also, ball·game.
Origin:
1840–50, Americanism