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fastball

[fast-bawl, fahst-]
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noun Baseball.
  1. a pitch thrown at or near a pitcher's maximum velocity.
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Origin of fastball

First recorded in 1910–15; fast1 + ball1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for fastball

fastball

noun
  1. baseball a ball pitched at the pitcher's top speed
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012