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.
Scouts raved about his fastball — which sat 92-94 mph at the time — and his improving curveball and changeup combination. Kansas City Star, 9 Apr. 2026 Joel Payamps struck out Trout on a full-count fastball. Senior Editor, Los Angeles Times, 9 Apr. 2026 With the count at 1-2, Gage elevated a four-seam fastball that Marsh couldn’t touch, stranding the runner and maintaining the scoreless tie. Justice Delos Santos, Mercury News, 9 Apr. 2026 Brandon Valenzuela went after a high fastball of his own, waving at a pitch above the zone for a strikeout. Fabian Ardaya, New York Times, 8 Apr. 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 15 Apr. 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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