fastball noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com

Definition of fastball noun from the Oxford Advanced American Dictionary

fastball

noun

NAmE//ˈfæstbɔl//

1(in baseball) a ball that is thrown at the pitcher's fastest speed

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2= fast-pitch softball

See fastball in the Oxford Advanced Learner's Dictionary

Check pronunciation: fastball