fastball

noun

fast·​ball ˈfas(t)-ˌbȯl How to pronounce fastball (audio)
: a baseball pitch thrown at full speed and often appearing to rise slightly as it nears the plate
fastballer noun

Examples of fastball in a Sentence

He struck him out with a fastball.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
And why hitters are still able to be successful when facing an average fastball velocity that's steadily increased year-over-year. Ian Miller Outkick, FOXNews.com, 1 July 2026 Cameron missed with both fastballs and his secondary pitches. Kansas City Star, 1 July 2026 The Diamondbacks’ Eduardo Rodriguez fired Haase an elevated four-seam fastball, bringing the count to 2-2. Justice Delos Santos, Mercury News, 30 June 2026 Ray continued his reinvention into a two-seam fastball pitcher, churning efficient contact outs and taking a shutout into the eighth inning before allowing an unearned run. Andrew Baggarly, New York Times, 29 June 2026 See All Example Sentences for fastball

Word History

First Known Use

1883, in the meaning defined above

Time Traveler
The first known use of fastball was in 1883

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Cite this Entry

“Fastball.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fastball. Accessed 5 Jul. 2026.

Kids Definition

fastball

noun
fast·​ball ˈfas(t)-ˌbȯl How to pronounce fastball (audio)
: a baseball pitch thrown at full speed

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