- a portable drill operated by compressed air and used to drill rock, break up pavement, etc.
Origin of jackhammer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for jackhammer
This is all done with the subtlety of someone wielding a jackhammer.Rage Against the Machine Dinosaur: What’s a Transformer Dinobot?
March 5, 2014
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
- 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
Word Origin and History for jackhammer
Online Etymology Dictionary, © 2010 Douglas Harper