JACKHAMMER
Noun
jackhammer (plural jackhammers)
A portable percussive power tool that combines a hammer and chisel used to drill or break hard matter, for instance rock or concrete.
Synonyms
• pneumatic drill (British)
Verb
jackhammer (third-person singular simple present jackhammers, present participle jackhammering, simple past and past participle jackhammered)
(intransitive) To use a jackhammer.
(transitive) To break (something) using a jackhammer.
(transitive) To form (something) using a jackhammer.
(intransitive, figurative) To move like a jackhammer.
(of the heart or pulse) To beat hard, to pound.
(transitive, figurative) To move (something) like a jackhammer.
(transitive, figurative) To strike (something) repeatedly with force, to pound.
Source: Wiktionary