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.
Thus, the fastball concerns connect to the question of how many innings Imai will provide. Will Sammon, New York Times, 2 Jan. 2026 The right-hander features a fastball that can reach the upper-90’s as well as a curveball, slider and splitter in his arsenal. James O'Connell, New York Daily News, 2 Jan. 2026 Striker Pence, a sophomore pitcher at Corona Santiago with a 100-mph fastball, will receive an endorsement deal from a radar gun company. Senior Editor, Los Angeles Times, 1 Jan. 2026 Lawrence, 26, stretched the Colts’ D with his fastballs. Tom Krasovic, San Diego Union-Tribune, 29 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

Browse Nearby Words

Cite this Entry

“Fastball.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fastball. Accessed 9 Jan. 2026.

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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