jackhammer
Word family nounJackeenJackyjackbootjackfishJack Frostjackhammerjackknifejackpotjacksmithjacksnipejackmanjackadjectivejackbooted
Tools, Construction
jack·ham·mer /ˈdʒækˌhæmə $ -ər/ noun [countableC] 
American EnglishAmETZTBC a large powerful tool used to break hard materials such as the surface of a road 风钻；凿岩机 SYN British English pneumatic drillExamples from the Corpus
jackhammer• My responsibility button was being hit with the force of a jackhammer.• A jackhammer started up somewhere beyond the prison walls.• But today, crews wielding jackhammers are frantically repairing the narrow streets.