English

Definition of jackhammer noun from the Oxford Advanced Learner's Dictionary

 

jackhammer

 noun
noun
BrE BrE//ˈdʒækhæmə(r)//
 
; NAmE NAmE//ˈdʒækhæmər//
 
(North American English) (British English pneumatic drill)
 
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a large powerful tool, worked by air pressure, used especially for breaking up road surfaces
See the Oxford Advanced American Dictionary entry: jackhammer

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