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 then in a 2-2 count to Sal Frelick, Sasaki threw a fastball up and out of the zone. Maddie Lee, Los Angeles Times, 24 May 2026 His ability to throw three different fastballs kept Seattle’s hitters guessing. Jaylon Thompson may 23, Kansas City Star, 24 May 2026 The center fielder fouled off two pitches before lining a fastball into center field. Jack Leo, AJC.com, 24 May 2026 Phillips mixed in five pitches during the outing — 17 sinkers, 14 splitters, 12 sweepers, nine curveballs and seven four-seam fastballs — and generated 10 swings and misses. Jordan McPherson, Miami Herald, 24 May 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 28 May. 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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