Definition of fastball in English:
1A baseball pitch thrown at or near a pitcher’s maximum speed.
- He might throw more pitches in the bullpen or throw more fastballs in the first inning.
- He throws a low 90s fastball and mixes it with a big-league curve.
- He also throws a split-finger fastball that serves as a changeup and occasionally a cutter.
1.1 another term for fast-pitch softball.
Definition of fastball in:
- US English dictionary
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