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Definition of jackhammer

jackhammer

/ˈdʒækˌhæm.ər/
jack · ham · mer

Plural:jackhammers
•
Past Simple:jackhammered
•
Past Participle:jackhammered
•
Present Participle:jackhammering
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jackhammer Lexical Profile

jackhammer Game Scores & Validity

• noun

1

North American A portable pneumatic or electromechanical tool that combines a hammer directly with a chisel, used primarily for breaking up rock, concrete, or asphalt.

Example

"The construction crew used a heavy jackhammer to tear up the damaged section of the highway."

• verb

1

To break, drill, or pound something using a heavy, percussive pneumatic tool.

Example

"They had to jackhammer the frozen ground before they could lay the foundation."


2

To beat or palpitate rapidly and forcefully (often describing a heart or pulse).

Example

"Her heart began to jackhammer in her chest as the shadow crept closer to the door."

Synonyms
View all synonyms for jackhammer

• Rhymes for jackhammer

Word Origin & Etymology

Originated in the early 20th century (circa 1913) originally as a trademark in the United States, combining 'jack' (denoting a robust mechanical device or worker) and 'hammer', referencing its percussive action.

Cite this Entry


Wordmom. (2026). Definition of Jackhammer. In Wordmom Dictionary. Retrieved Oct 13, 2026, from https://wordmom.com/dictionary/jackhammer
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