What does jackhammer mean?
A jackhammer is a heavy power tool that delivers repeated blows to break, drill, or excavate hard materials. It is commonly used on concrete, asphalt, brick, stone, and rock, particularly in roadwork, construction, demolition, and quarrying. The tool may be powered by electricity, compressed air, or hydraulic power, and its rapid impact creates considerable noise and vibration. As a verb, 'to jackhammer' means to break up or drill a surface with this tool. The term is widely understood in everyday English, although occupational contexts may prefer more specific names such as 'pneumatic drill' or 'road breaker.' Its compact formation from 'jack' and 'hammer' reflects the tool's practical name and long-standing use in construction work.
A powerful tool that delivers rapid blows to break or drill hard materials such as concrete, asphalt, brick, or rock.
"The jackhammer was too heavy for one worker to carry alone."
The word is commonly used for both electric and compressed-air tools. In British English, 'pneumatic drill' is a frequent alternative.
To break up, drill, or excavate a hard surface using a jackhammer.
"They jackhammered the sidewalk before the new paving was laid."
This use is informal or occupational rather than formal literary English.
Used when referring to multiple jackhammer tools.
"The crew brought several jackhammers to the construction site."
The word combines two everyday objects—'jack' and 'hammer'—to name the tool whose rapid blows can shake a construction site.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does jackhammer come from?
The compound 'jackhammer' is formed from 'jack,' used in the names of various lifting or mechanical devices, and 'hammer,' denoting a tool that delivers blows. The word developed in English during the early twentieth century as mechanical and pneumatic tools became common in construction and roadmaking. It is closely related in form and meaning to other hammer-based tools, while 'hammer' itself continues from Germanic roots referring to a striking instrument.
Related word forms
How jackhammer is actually used
As a noun, 'jackhammer' is standard in general English. As a verb, it is informal or occupational in tone and usually describes work involving road, concrete, or construction demolition. In British English, 'pneumatic drill' is also common.