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.
Bogaerts had been struck in the back of his helmet by a 94 mph fastball in the fifth inning. Kevin Acee, San Diego Union-Tribune, 14 June 2026 Rookie Denzer Guzman came through by fighting off a 1-and-2 fastball at the top of the strike zone and dumping it into center field. Jeff Fletcher, Oc Register, 14 June 2026 Hernandez sent a fastball to deep left-center to lead off the inning, then with two outs, Mack hit a 424-foot shot to straightaway center. Miami Herald, 14 June 2026 Hernández opened the scoring by sending a Skenes fastball 403 feet into the left-field bleachers. CBS News, 14 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

Browse Nearby Words

Cite this Entry

“Fastball.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fastball. Accessed 17 Jun. 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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