ballpark figure
An acceptable, roughly accurate approximation, as in I know you can't tell me the exact cost; just give me a ballpark figure. This term alludes to a baseball field, which is always an enclosed space. The expression is basically an extension of the somewhat earlier in the ballpark, meaning within a reasonable range, and out of the ballpark, beyond a reasonable range. [Slang; late 1960s]
Words nearby ballpark figure
ballotade,
ballotini,
ballottement,
ballottine,
ballpark,
ballpark figure,
ballplayer,
ballpoint,
ballroom,
ballroom dance,
ballroom dancing