fastball

[ fast-bawl, fahst- ]
/ ˈfæstˌbɔl, ˈfɑst- /

noun Baseball.

a pitch thrown at or near a pitcher's maximum velocity.

Origin of fastball

First recorded in 1910–15; fast1 + ball1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for fastball

fastball

/ (ˈfɑːstˌbɔːl) /

noun

baseball a ball pitched at the pitcher's top speed
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