A portable pneumatic hammer or drill.
- ‘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.’
- ‘They are doing alterations in my office building, and there is a little man coming in every day with a jackhammer and it sounds as if he is drilling his way through to Singapore.’
- ‘For the past few days, we've been blown away with all the noise from jackhammers, heavy road equipment, and auxiliary power units.’
verb[WITH OBJECT]North american
Beat or hammer heavily or loudly and repeatedly.
- ‘John, 40, said: ‘I was jackhammering concrete with my mate Dave when he saw something and said it looked like a hand grenade.’’
- ‘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.’
- ‘In the Fifties, radiant heating using hot water pipes embedded in concrete floor slabs made a promising entrance - and a humiliating exit after leaks required countless slabs to be jackhammered up for repair.’
- ‘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.’