fair ball: Meaning and Definition of

fair' ball'

Pronunciation: [key]
— Baseball. Baseball.
  1. a batted ball that both lands and settles within the foul lines in the infield, or that is within the foul lines when bounding to the outfield past first or third base, or that first lands within the foul lines of the outfield or would if it were not caught or deflected.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.