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[jak-ham-er] /ˈdʒækˌhæm ər/
a portable drill operated by compressed air and used to drill rock, break up pavement, etc.
Origin of jackhammer
An Americanism dating back to 1925-30; jack1 + hammer Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for jackhammer
Contemporary Examples
Historical Examples
  • They began knocking scales loose with the jackhammer and cutting into the leathery skin underneath with sonocutters.

    Four-Day Planet Henry Beam Piper
  • The noise a jackhammer makes isn't pleasant at all, but if it doesn't make that noise, you figure it isn't functioning properly.

    A Spaceship Named McGuire Gordon Randall Garrett
British Dictionary definitions for jackhammer


a hand-held hammer drill, driven by compressed air, for drilling rocks, etc
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
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Word Origin and History for jackhammer

also jack hammer, 1903, from jack (n.) + hammer (n.). As a verb by 1965.

Online Etymology Dictionary, © 2010 Douglas Harper
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