Pronunciation: (bôl'pärk"), [key]
1. a tract of land where ball games, esp. baseball, are played.
2. a baseball stadium.
3. in the ballpark, Informal.within reasonable, acceptable, or expected limits: The price may go up another $10, but that's still in the ballpark.
Informal.being an approximation, based on an educated guess: Give me a ballpark figure on our total expenses for next year. Also,ball' park".
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.