: a baseball pitch thrown at full speed and often appearing to rise slightly as it nears the plate

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.
Blanco opened that frame with strikeouts of Hicks and Griffin Conine, but Mack followed Marsee by drilling a 3-2 fastball for his eighth homer of the season. Miami Herald, 21 July 2026 Kirwin, a journeyman right-hander, earned his opportunity with the Red Sox in 2024 after impressing scouts with a 98 mph fastball in independent baseball. Peter Chawaga, Forbes.com, 21 July 2026 Former Bishop Feehan star Brody Bumila didn’t go in the first round of the MLB draft earlier this month, but the 6-foot-9 lefty with an 100 mph fastball still got paid like one of the top selections. Greg Dudek, Boston Herald, 21 July 2026 Thompson was a college reliever with a big fastball and sporadic success. Mitch Bannon, New York Times, 21 July 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 1 Aug. 2026.

Kids Definition

: a baseball pitch thrown at full speed

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