jackhammer

/ˈdʒækˌhæmər/
verb
  1. To break up or pound something using a jackhammer or with a similar forceful, repetitive motion.
    • The crew jackhammered the concrete foundation into pieces.
    • She jackhammered the frozen ground to plant the fence posts.
    • They had to jackhammer through the thick asphalt to repair the pipe.
  2. To move or vibrate with a rapid, pounding motion, like a jackhammer.
    • The old engine jackhammered loudly before stalling.
    • His heart jackhammered in his chest after the scary movie.
    • Her leg jackhammered nervously under the table during the interview.
noun
  1. A portable power tool that uses a hammering action to break up pavement, rock, or concrete.
    • The noise of the jackhammer echoed through the street all morning.
    • He wore earplugs while operating the jackhammer.
    • The construction worker used a jackhammer to break the old sidewalk.