jack·​ham·​mer | \ˈjak-ˌha-mər \

Definition of jackhammer 

1 : a pneumatically operated percussive rock-drilling tool usually held in the hands

2 : a device in which a tool (such as a chisel for breaking up pavements) is driven percussively by compressed air

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Other Words from jackhammer

jackhammer verb

Examples of jackhammer in a Sentence

Recent Examples on the Web

Just one block north, Imperial Street ends in the dust and jackhammers of a massive municipal construction project, but a few blocks to the south and east there are signs of a new kind of urban life. Alexandra Marshall, WSJ, "Dover Street Market Expands While Defying Retail Convention," 14 Aug. 2018 As word spread, local businessmen and their backers in Niger’s government invested in generators, jackhammers, rock grinders and dynamite. Joe Parkinson, WSJ, "Thousands Flock to Remote, Lawless Sahara in Search of Gold," 16 Oct. 2018 Next time you phone city hall to complain about the condition of your street, officials will ship you a crate containing a small jackhammer, a shovel and a five-gallon bucket of Pot Hole Patch. Drew Broach, NOLA.com, "How much money do Jefferson Parish officials have in their campaign accounts?," 16 Feb. 2018 The couple hired contractors to break up the concrete floor with jackhammers and install French drains beneath a new floor with a radiant heating system, which banished the indoor stream. Tim Mckeough, New York Times, "In the Hudson Valley, a Home With Centuries’ Worth of Stories," 3 July 2018 Sixty volunteers showed up with tools and jackhammers. Dawn Fallik, Washington Post, "What to do about lonely older men? Put them to work.," 24 June 2018 That means that instead of chisel work in the field, the paleontologists are wielding jackhammers and rock saws. Steve Johnson, chicagotribune.com, "'Antarctic Dinosaurs' bring new ice age to Field Museum," 13 June 2018 Bouwes combed the internet and found a thriftier alternative: a hydraulic post pounder, a machine that resembles a cross between a jackhammer and a bazooka. Ben Goldfarb, Science | AAAS, "Beaver dams without beavers? Artificial logjams are a popular but controversial restoration tool," 7 June 2018 The aural assault of jackhammers and cement trucks fades at the walls of the complex. Fortune, "Deadly Chinese Fentanyl Is Creating a New Era of Drug Kingpins," 6 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'jackhammer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of jackhammer

1912, in the meaning defined at sense 1

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Last Updated

28 Nov 2018

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Time Traveler for jackhammer

The first known use of jackhammer was in 1912

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More Definitions for jackhammer



English Language Learners Definition of jackhammer

: a heavy tool used to break hard substances (such as concrete) into pieces by a repeated pounding action

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More from Merriam-Webster on jackhammer

Rhyming Dictionary: Words that rhyme with jackhammer

Spanish Central: Translation of jackhammer

Nglish: Translation of jackhammer for Spanish Speakers

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to enclose within walls

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