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.
In terms of pitch mix, the 21-year-old’s fastball plays better than its mid-90s velocity, which bodes well considering the strides other pitchers have made increasing their velo in Boston’s pitching program. Mac Cerullo, Boston Herald, 21 Dec. 2025 Jenks, who routinely reached 100 mph with his fastball, helped the White Sox win the 2005 World Series, saving four games in six appearances during the postseason run, including the clinching game of the series. Adam Harrington, CBS News, 18 Dec. 2025 But pitchers exploited their weaknesses in different ways, peppering García with fastballs and Castellanos with nearly as many breaking balls as fastballs. Charlotte Varnes, New York Times, 17 Dec. 2025 The velocity of Skaggs’ fastball had also dropped between 2016 and 2019, Duquette explained, which gave hitters more time to make a decision and potentially put the ball into play, and put more pressure on Skaggs’ off-speed pitches. Sean Emery, Oc Register, 13 Dec. 2025 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 24 Dec. 2025.

Kids Definition

fastball

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

More from Merriam-Webster on fastball

Last Updated: - Updated example sentences
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