Definition of jackhammer in English:

jackhammer

Syllabification: jack·ham·mer
Pronunciation: /ˈjakˌhamər
 
/
chiefly North American

noun

A portable pneumatic hammer or drill.
More example sentences
  • Landon cracked his eyes open and grimaced in pain from the pounding headache; like an incessant jackhammer drilling into his skull at all angles.
  • In Taba, where the blast brought down a 10-storey wing of the resort, Egyptian and Israeli rescuers used everything from jackhammers and drills to dogs and bare hands to search the wreckage.
  • In a quiet sidestreet, at 3am, someone was running a bloody jackhammer, drilling up the tarmac.

verb

[with object] Back to top  
Beat or hammer heavily or loudly and repeatedly.
More example sentences
  • Having pinpointed the exact location, the bird goes in for the kill with an elaborate maneuver, kicking its legs out from under its wings and jackhammering its beak a few centimeters into the soil to nab its wriggling breakfast.
  • Two workmen are busy jackhammering the footpath.
  • After a week of jackhammering the basement, we had ourselves a shiny new sump pump complete with a perimeter drain, battery backup and snazzy cover.

Definition of jackhammer in:

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Pronunciation: ˌɪntəˈniːsʌɪn
adjective
destructive to both sides in a conflict